Changelog

1.12.8 (core) / 0.28.8 (libraries)

New

dg plus deploy commands now support Python 3.13 and Python 3.14.

Bugfixes

Fixed an issue where the Dagster Helm chart and Dagster+ agent helm chart could no longer deploy using Helm without adding the --skip-schema-validation flag to the Helm deploy command. Thanks @kang8!

1.12.7 (core) / 0.28.7 (libraries)

New

Optimized performance of calculating partition keys for time window partitions with exclusions.
timedelta and datetime are now available via the datetime context when rendering components (Thanks, @stevenayers!)
FreshnessPolicy is now available via the dg context when rendering components. (Thanks, @stevenayers!)
Assets may now be annotated with up to 10 kinds (limit was previously 3).
Arbitrary resource parameters may now be hidden in the UI by setting json_schema_extra={"dagster__is_secret": True} on the corresponding Field definition in the resource class.
The dg docs cli group has been removed. The integrations subcommand has been moved to dg utils integrations.
Bumped the gql dependency in dagster-graphql to be inclusive of v4 for broader transitive dependency compatibility
[dagster-omni] Fix issue where retries would terminate while asynchronously gathering metadata.
[dagster-tableau] The value of resource parameter TableauWorkspace.connected_app_secret_value is now hidden in the UI.
[dagster-tableau] Updated extraction logic to handle hidden sheets. The materializable data sources connected to these sheets are now successfully detected and included as materializable data assets. (Thanks, @miriamcastel!)

Bugfixes

Fix an AttributeError when calling map_asset_specs on assets defined using the ins parameter. (Thanks, @Jongwan93!)
Fix an issue where backfill runs that incorrectly created unpartitioned materializations of a partitioned asset, or partitioned materializations of an unpartitioned asset due to incorrect asset business logic would move the backfill into an invalid state. Now, the backfill will detect this case and fail the backfill.
Fixed an issue with dg plus deploy refresh-defs-state which could cause errors when refreshing state for components that required CLIs that were only available in the project environment.
[dagster-dbt] Fixed issue that could cause errors when emitting events for a dbt Cloud job run.

Dagster Plus

Dagster Plus Pro users can now create service users. Service users are accounts that can authenticate API requests but that are not tied to any particular human user.

1.12.6 (core) / 0.28.6 (libraries)

New

All CLI commands under dagster project have been removed. create-dagster should be used instead.
[ui] Added a new Partitions facet to the Asset Lineage Graph.
[ui] More details are now displayed for SINCE conditions in evaluation tables for automation conditions.
[dagster-dbt] Added dbt cloud logs to stdout after the run completes in dbt cloud.
[dagster-tableau] Improved resilience when fetching Tableau workspace data. The integration now skips individual workbooks that fail to return data and logs a warning, rather than failing the entire operation. (Thanks, @miriamcastel!)

Bugfixes

Fixed an issue that would cause errors when attempting to create subclasses of Resolved that had fields using default_factory arguments.
Fixed an issue with dg plus deploy refresh-defs-state which could cause errors when refreshing state for components that required CLIs that were only available in the project environment.
[ui] Fixed Snowflake connection by changing the private key encoding from PEM to DER format. Snowflake requires unencrypted RSA private keys to be in DER format as bytes.
[dagster-dbt] Updated DbtCliResource to use the project_dir attribute from the DbtProject instance rather than passing the entire DbtProject object.
[dagster-tableau][dagster-sigma] Fixed bug that would cause templated env vars to not be resolved when specified in yaml.

1.12.5 (core) / 0.28.5 (libraries)

New

Increased the version of NextJS used by the Dagster webserver and the dg docs serve command to 15.5.7. While these applications are unaffected by https://nextjs.org/blog/CVE-2025-66478 due to not using React 19, this upgrade ensures that dagster packages will not be flagged for that CVE by vulnerability scanners.

1.12.4 (core) / 0.28.4 (libraries)

New

CI workflows for Gitlab projects can now be scaffolded using dg plus deploy configure.
"/" characters are now allowed in concurrency pool names.
Pod wait timeout for K8sPipeClient can now be specified (Thanks, @abhinavDhulipala!)
New kind tag icon for Zendesk (Thanks, @kporter13!)
[dagster-tableau] Added enable_embedded_datasource_refresh and enable_published_datsource_refresh options to the TableauComponent, which allow creating materializable assets for the associated datasource types.

Bugfixes

Fixed an issue where passing in JSON serializable enums to JsonMetadataValue would sometimes result in an error.
Fixed an issue that would cause SensorDefinition subclasses (e.g. AutomationConditionSensorDefinition, RunStatusSensorDefinition) to be converted to having the wrong sensor_type property when produced from a Component.
Fixed an issue where the Flower config map was included in the Helm chart even when Flower was disabled (Thanks, @LoHertel!)
[dagster-dbt] Fixed a FileExistsError on Windows when reloading dbt project definitions by ensuring the local project directory creation handles pre-existing directories (Thanks, @Jongwan93!)
[dagster-tableau] Fixed a KeyError that occurred when using workbook_selector_fn to filter assets. Now dependencies are only accessed if they exist in the workspace data. (Thanks, @miriamcastel!)
[dagster-tableau] Fixed an issue where workbook_selector_fn was only applied to the first 100 workbooks.
[dagster-tableau] The workbook is now part of the asset key prefix to avoid naming collisions.
[dagster-tableau] Fixed an issue where workbook names with dots . were improperly handled.

Documentation

Updated dagster-iceberg docs to include recently-added features. (Thanks, @zyd14!)

1.12.3 (core) / 0.28.3 (libraries)

New

Updated the cursoring logic of AutomationCondition.since()/AutomationCondition.newly_true() to make them retain access to their stored data in a wider range of scenarios where the underlying condition structure is changed.
Added a --use-active-venv method to a variety of dg commands. (Thanks, @cmpadden!)
The build_defs_at_path and load_component_at_path methods on the ComponentLoadContext class have been renamed to build_defs and load_component respectively. The previous names have been preserved for backcompat.
The template variables available in the default resolution scope for Components have been reorganized / expanded:
- {{ automation_condition.on_cron(...) }} -> {{ dg.AutomationCondition.on_cron(...) }}
- **new: ** All AutomationCondition static constructors may be accessed via the dg context, e.g.:
  - {{ dg.AutomationCondition.on_missing() & dg.AutomationCondition.in_latest_time_window() }}
- **new: ** All PartitionsDefinition subclasses are now available via the dg context, e.g.:
- {{ dg.StaticPartitionsDefinition(['a', 'b', 'c']) }}
- {{ dg.DailyPartitionsDefinition('2025-01-01') }}
- {{ project_root }} -> {{ context.project_root }}
- {{ build_definitions_at_path(...) }} -> {{ context.build_defs(...) }}
- {{ load_component_at_path(...) }} -> {{ context.load_component(...) }}
- All previous template vars will continue to work as before for backcompat.
[ui] Improve browser performance for large asset graphs.
[dagster-snowflake] Added create_snowpark_session() which provides a convenient way to create a Snowpark session. (Thanks, @stevenayers!)
[dagster-snowflake] Added get_databases(), get_schemas(), get_tables(), get_views(), get_pipes() & get_stages() which provide a pythonic interface for Snowflake introspection. (Thanks, @stevenayers!)
[dagster-dbt] You can now override the op_config_schema property on the DbtProjectComponent to customize how your dbt execution can be configured at runtime.

Bugfixes

Added the ability to execute refreshes of embedded and published datasources when using the TableauComponent.
Fixed a bug in asset partitions where the partition range selector would sometimes stop working.
[dagster-dbt] Fixed a FileExistsError on Windows when reloading dbt project definitions by ensuring the local project directory creation handles pre-existing directories. (Thanks, @Jongwan93!)
[dagster-dbt] Fixed an issue introduced in version 1.12.2 that caused the DbtProjectComponent to not produce asset checks for tests on dbt sources. (Thanks, @stevenayers!)

Documentation

Added documentation for the community dagster-slurm integration. (Thanks, @geoHeil!)

1.12.2 (core) / 0.28.2 (libraries)

New

Dagster has dropped support for Python 3.9 (due to end of life). The minimum supported Python version is now 3.10. This is a breaking change originally intended for the 1.12.0 release.
Added dg api schedule {list,get} command.
Added new dg plus deploy configure CLI group that generates all the files necessary to get an existing project ready for deployment via Dagster+.
[ui] A new sidebar in the Asset catalog (behind a feature flag) provides a hierarchical view of your asset keys.
[ui] Improve a few parts of the "Recent updates" timeline section of the Asset overview page.
[dagster-census] Added CensusComponent allowing Dagster assets to sync with census connections.
[dagster-airbyte] New AirbyteWorkspace configurations: poll_previous_running_sync, max_items_per_page, poll_interval, poll_timeout & cancel_on_termination. (Thanks, @stevenayers and @sonianuj287!)
[dagster-dbt] You can now override the op_config_schema property on the DbtProjectComponent to customize how your dbt execution can be configured at runtime.

Dagster Plus

[ui] "Edit public catalog views" is now editable in the role permission list.

1.12.1 (core) / 0.28.1 (libraries)

New

Migrate SqlComponent to Pydantic v2 model_config pattern (Thanks, @LPauzies!)
Make dg api commands visible in dg --help output.
Make dg plus commands visible in the dg --help output.
Add Dremio kind icon. (Thanks, @maxfirman!)
The github actions scaffolded by dg scaffold github-actions now include commands to refresh state for StateBackedComponents.
Run worker health check will now tag runs with their associated ENI ids.
[ui] In asset sidebar, clearly indicate when a freshness policy is a legacy policy.
[ui] Cost metrics are now shown on the asset catalog insights page.
[dagster] New AutomationConditions for checking asset freshness - dg.AutomationCondition.freshness_passed(), dg.AutomationCondition.freshness_warned() and dg.AutomationCondition.freshness_failed(). (Thanks, @stevenayers!)

Bugfixes

[ui] Fix a sporadic race condition when loading jobs in the Dagster UI.
[ui] Fixed an issue where deploying multiple serverless code locations simultaneously would sometimes fail with a "the dagster package dependency was expected but not found" error.
[ui] Fixed a bug that would cause errors when attempting to supply config to a backfill that targeted assets with checks.
[ui] Fixed an issue introduced in dagster 1.11.16 where repositories using custom RepositoryData subclasses would sometimes raise an error when viewing jobs in the Dagster UI.
[ui] Fix sensor descriptions in the automation list.
[dagster-dask] Fixed an issue where Dask parquet filters configured in YAML would fail with ValueError: too many values to unpack (expected 3) when using Dask version 2022.4.2. (Thanks, @kudryk!)
[dagster-dbt] Fixed an issue where dagster-dbt runs targeting large numbers of models could cause the underlying dbt CLI invocation to fail from too many arguments.

Dagster Plus

[ui] The insights view in the Observe UI now allows you to specify a custom date range.

1.12.0 (core) / 0.28.0 (libraries)

Major changes since 1.11.0 (core) / 0.27.0 (libraries)

UI

Refreshed UI: The UI has been redesigned and streamlined to make it easier to find common utilities quickly. Navigation elements have been moved from a header to a collapsible sidebar to help highlight important workflows and provide more visual space throughout the product.

Components

Components GA: The Components framework and the dg CLI are now marked as GA (previously Release Candidate). The APIs are fully supported throughout all parts of the product and remain the recommended defaults for new Dagster projects.
Standardized Integrations: Integration components have been updated to have execute() and get_asset_spec() methods that can be overridden by subclasses, making it easier and more consistent to customize your components.
New Components:
State-Backed Components: Added a new StateBackedComponent abstract base class that enables components to persist and manage state separately from their YAML / Python configuration. This is particularly useful for integration components that need to fetch external data. State can be managed locally, in versioned storage, or via code server snapshots. Many integration components (AirbyteWorkspaceComponent, FivetranAccountComponent, PowerBIWorkspaceComponent, AirflowInstanceComponent, and DbtProjectComponent) now extend StateBackedComponent to provide better control over state management. You can check out the docs here!

Simplified Deployment

dg scaffold build-artifacts scaffolds Docker and configuration files needed to build and deploy your Dagster project to Dagster Cloud, with support for multiple container registries (ECR, DockerHub, GHCR, ACR, GCR).
dg scaffold github-actions generates a complete GitHub Actions CI/CD workflow for deploying to Dagster Cloud, with auto-detection of Serverless vs Hybrid agents and guided setup for required secrets.

Core Orchestration

FreshnessPolicies GA: The new FreshnessPolicy API introduced in 1.10.0 has stabilized and is now marked as GA (previously Preview). These supersede the LegacyFreshnessPolicy API (formerly FreshnessPolicy, deprecated in 1.10.0), as well as freshness checks.
- FreshnessPolicy and apply_freshness_policy are now exported from the top-level dagster module (instead of dagster.preview.freshness ).
- The build_.*_freshness_checks methods have been marked as superseded . Their functionality will remain unchanged, but we recommend using FreshnessPolicy s for new use cases.
- The FreshnessDaemon now runs by default, rather than needing to be explicitly enabled via dagster.yaml settings. To turn it off, set:
```
freshness:
  enabled: false
```
Configurable Backfills: Run config can now be supplied when launching a backfill, allowing you to specify configuration that will be applied uniformly to all runs.
Time-based partition exclusions: All subclasses of TimeWindowPartitionsDefinition now support an exclusions parameter, which allows you to exclude specific dates/times or recurring schedules from your partition set. This is useful for implementing custom calendars that exclude weekends, holidays, or maintenance windows. Exclusions can be specified as cron strings (e.g., "0 0 * * 6" for Saturdays) or datetime objects for specific dates.
Execution Dependency Options: All Executors have been updated to accept an optional step_dependency_config parameter with a require_upstream_step_success flag. When set to False via {"step_dependency_config": {"require_upstream_step_success": False}}, downstream steps can start as soon as their required upstream outputs are available, rather than waiting for the entire upstream step to complete successfully. This is particularly useful for large multi-assets where downstream assets only depend on a subset of upstream outputs.

Support & Docs

We launched a new Support Center with help articles on Dagster+ Hybrid and Serverless troubleshooting, and answers to customer questions previously answered by our support team.
In our docs:
- We reorganized the Examples section for easier navigation, and added new full pipeline examples on using Dagster with DSpy and PyTorch, as well as targeted mini examples that showcase best practices for:
- We added new guides to help you:
- We added links to Dagster University, our popular Python Primer blog post series, Dagster Deep Dives, customer case studies, Dagster Open Platform, and sales demo example pipelines so you can access all the resources you need to learn about Dagster in one place.

Changes since 1.11.16 (core) / 0.27.16 (libraries)

New

In the Dagster helm chart, images can now be specified by digest (Thanks, @pmartincalvo!)
The MultiprocessExecutor, DockerExecutor, and K8sJobExecutor now retry according to their configured retry policy when the step fails during resource initialization.
[dagster-aws] Added an optional key_prefix parameter to PipesS3ContextInjector (Thanks, @elipinska!)
[dagster-azure] Added a new PipesAzureMLClient.
[dagster-pipes] Added support for AzureBlobStorage.
[dagster-tableau] Added a new TableauComponent
[dagster-looker] Added a LookerComponent
[dagster-sigma] Added a new SigmaComponent.
[dagster-dbt] The DagsterDbtTranslator no longer has a get_freshness_policy method, nor does it automatically parse the legacy / deprecated LegacyFreshnessPolicy objects from dbt model configuration.
[dagster-sling] The DagsterSlingTranslator no longer has a get_freshness_policy method, nor does it automatically parse the legacy / deprecated LegacyFreshnessPolicy objects from sling configuration.

Bugfixes

Asset jobs that are unable to resolve their asset selection (for example, due to targeting an empty set of asset keys) will now raise a clearer exception at definition load time explaining which job failed to resolve its asset selection.
Fixed an issue where automatic run retries of runs that only targeted asset checks would sometimes fail with a DagsterInvalidConfigError.
[ui] Fixed issue causing sensor descriptions to not be displayed in the automation list.
[dagster-dbt] Fixed a bug causing enable_code_references to result in errors for dbt assets.

Documentation

Corrected several typos and inconsistencies in the helm chart documentation (Thanks, @piggybox!)

1.11.16 (core) / 0.27.16 (libraries)

New

The proxy GRPC server heartbeat TTL can now be configured with the DAGSTER_GRPC_PROXY_HEARTBEAT_TTL_SECONDS env var (default remains 30 seconds).

Bugfixes

Fixed an issue introduced in dagster 1.11.15 where code locations that previously loaded would sometimes fail to load with a gRPC Error code: RESOURCE_EXHAUSTED error.
Fixed an issue where defining a repository using a dictionary of job definitions with a key that did not match the name of the job would work when running dagster locally but not when using Dagster+.
[components] Fixed a bug that caused errors when using the DbtProjectComponent, FivetranAccountComponent, and similar state-based components in k8s deployments due to a missing StateStorage object in context.
[dagster-omni] Added a dependency on python-dateutil to dagster-omni. (Thanks, @bollwyvl!)

1.11.15 (core) / 0.27.15 (libraries)

New

All sequences are now supported in AssetKey.with_prefix. (Thanks, @aksestok!)
[ui] Introduce new navigation, with main navigation items previously in top navigation now in a collapsible left nav.
[ui] Improve loading performance of Runs page.
[dagster-databricks] Add support for notebook_task in PipesDatabricksClient. (Thanks, @SoerenStahlmann!)

Bugfixes

Fixed an issue where fetch_row_counts and fetch_column_metadata do not execute in the same working directory as the underlying dbt command.
Fixed a bug with AutomationCondition.execution_failed that would cause it to be evaluated as True for an unpartitioned asset in cases where the latest run failed, but the asset itself materialized successfully before that failure.
Unrelated resource keys are now no longer included in the run config schema for subselections of assets.
Ignored nodes are properly excluded when generating run config for an implicit asset job
Invalid UTF-8 in stderr compute logs are now handled gracefully. (Thanks, @2bxtech!)
[ui] Fix top nav rendering for Plus users.
[dagster-celery] Fix Celery executor ignoring pools for ops. (Thanks, @kkanter-asml!)
[dagster-dbt] Fixed issue that made custom template vars unavailable when specifying them for the cli_args: field of the DbtProjectComponent.
[dagster-cloud-cli] Fixed an issue where deploying multiple serverless code locations or code locations with a custom project directory would sometimes fail with an "The dagster package dependency was expected but not found." error.

Documentation

Fixed broken social media link in docs. (Thanks, @MandyMeindersma!)

Dagster Plus

[ui] Fix home page performance for users with large numbers of automations and jobs.
[ui] Fix a sporadic JavaScript error that can crash the page when loading insights charts.

1.11.14 (core) / 0.27.14 (libraries)

New

UnionTypes (e.g. Foo | Bar) are now supported in ConfigurableResources. (Thanks, @DominikHallab!)
Added an output_metadata parameter to build_output_context (Thanks, @zyd14!)
ResolvedAssetSpec and related resolvers now support setting the freshness_policy field.
dagster-dbt project prepare-and-package --components . will no longer attempt to load components outside of DbtProjectComponent, preventing errors when attempting to run this command in environments that do not have the necessary env vars set for other components.
click<8.2 upper bound has been removed
[dagster-airbyte][dagster-fivetran][dagster-powerbi][dagster-sling][dagster-dlt] The AirbyteWorkspaceComponent, FivetranAccountComponent, PowerBIWorkspaceComponent, SlingReplicationCollectionComponent, and DltLoadCollectionComponent components have been updated to include a get_asset_spec method that can be overridden by subclasses to modify translation behavior.
[dagster-airbyte][dagster-fivetran] The AirbyteWorkspaceComponent and FivetranAccountComponent have been updated to include an execute() method that can be overridden by subclasses to modify runtime execution behavior.
[dagster-airbyte] The AirbyteWorkspaceComponent no longer binds an "io_manager" or "airbyte" resource, meaning it can be used in tandem with other definitions that use those keys without causing conflicts.
[dagster-dbt] The DbtProjectComponent now supports overriding get_asset_spec and get_asset_check_spec methods when subclassing.
[dagster-fivetran] The FivetranAccountComponent no longer binds an "io_manager" or "fivetran" resource, meaning it can be used in tandem with other definitions that use those keys without causing conflicts.

Bugfixes

Fixed a bug that would cause errors when instantiating a TimeWindowPartitionsDefinition with a monthly schedule and the default day offset.
[ui] The Materialize button in the lineage view is now disabled while the view is updating to avoid inconsistencies when launching runs.
[ui] Fixed an issue where the "View error" link in the popup that displayed when a backfill failed to launch was very difficult to see.
[dagster-dbt] Fixed issue where the select and exclude parameters to @dbt_assets would be ignored when generating AssetCheckSpecs (Thanks, @nathanskone!)
[dagster-powerbi] Previously, assets generated for semantic models would have a kind tag with an invalid space character ("semantic model"). Now, they have the kind tag "semantic_model".
[dagster-sling] Resolved issue that caused the substring "INF" to be stripped from all logs.

1.11.13 (core) / 0.27.13 (libraries)

New

[dagster-deltalake,dagster-deltalake-polars] BREAKING CHANGE - we now support deltalake>=1.0.0 for dagster-deltalake and dagster-deltalake-polars and we will no longer support deltalake<1.0.0 moving forward. End user APIs remain the same for both libraries.
[dagster-databricks] Spark Python and Python Wheel tasks are now supported in PipesDatabricksServerlessClient.
[dagster-dbt] dagster-dbt project prepare-and-package --components . will no longer attempt to load components outside of DbtProjectComponent, preventing errors when attempting to run this command in environments that do not have the necessary env vars set for other components.
[dg] adds dg api secret list and dg api secret get

Bugfixes

Fixed a bug in the backfill daemon where an asset backfill with CANCELING or FAILING status could become permanently stuck in CANCELING or FAILING if the partitions definitions of the assets changed.
Fixed an issue introduced in the 1.11.12 release where auto-complete in the Launchpad for nested fields stopped working.
Fixed an issue where backfills would fail if a TimeWindowPartitionsDefinition's start date was changed in the middle of the backfill, even if it did not remove any of the targeted partitions.
[ui] Fixed the link to "View asset lineage" on runs that don't specify an asset selection.

1.11.12 (core) / 0.27.12 (libraries)

New

[ui] Allow searching across code locations with * wildcard in selection inputs for jobs and automations.
[ui] Added AutomationCondition.all_new_executed_with_tags, which allows automation conditions to be filtered to partitions that have been materialized since the last tick from runs with certain tags. This condition can be used to require or prevent certain run tags from triggering downstream declarative automation conditions.

Bugfixes

In dagster==1.11.1, partitioned_config was unintentionally removed from the public exports of the top-level dagster package. This has been fixed.
Avoid adding trailing whitespace in env vars that use dot notation in components. Thanks @edgarrmondragon!
[dagster-airbyte] Fix the pagination url issue for the Airbyte API. Thanks @stevenayers!
[dagster-dbt] Fixed an issue with the DbtCloudWorkspaceClient that would cause errors when calling trigger_job_run with no steps_override parameter.

Dagster Plus

[ui] Add Cost insights.
[ui] For users who have inherited org roles from a team, show those roles when editing the user.
[ui] Fix per-asset and per-job insights graphs.

1.11.11 (core) / 0.27.11 (libraries)

New

anthropic, mcp, and claude-code-sdk dependencies of dagster-dg-cli are now under a separate ai extra, allowing dagster-dg-cli to be installed without these dependencies.
Added AutomationCondition.all_new_updates_have_run_tags and AutomationCondition.any_new_update_has_run_tags, which allows automation conditions to be filtered to partitions that have been materialized since the last tick from runs with certain tags. This condition can be used to require or prevent certain run tags from triggering downstream declarative automation conditions. These conditions are similar to AutomationCondition.executed_with_tags, but look at all new runs since the most recent tick instead of just looking at the latest run.

Bugfixes

Fixed a bug which would cause steps downstream of an asset with skippable=True and a blocking asset check to execute as long as the asset check output was produced, even if the asset output was skipped.
When a backfill fails, it will now cancel all of its in-progress runs before terminating.
Fixed an issue that would cause trailing whitespace to be added to env vars using dot notation ({{ env.FOO }}) when listing the env vars used by a component. (Thanks, @edgarrmondragon!)
Fixed issue that would cause errors when using multi to single partition mappings with DbIOManagers.
[ui] Fixed issue with the "Report materialization" dialog for non-partitioned assets.
[ui] Typing large YAML documents in the launchpad when default config is present is now more performant.
[ui] Fixed an issue where setting a FloatMetadataValue to float('inf') or float('-inf') would cause an error when loading that metadata over graphql.
[ui] The "Clear" button in the dimension partition text input for multi-partitioned assets now clears invalid selections as expected.
[dagster-dbt] Fixed an issue with the DbtCloudWorkspaceClient that would cause errors when calling trigger_job_run with no steps_override parameter.

1.11.10 (core) / 0.27.10 (libraries)

New

Added inline-component command to the publicly available scaffold commands in the Dagster CLI.
Added a new require_upstream_step_success config param to all executors. If {"step_dependency_config": {"require_upstream_step_success": False}} is set, this will allow downstream steps to execute immediately after all required upstream outputs have finished, even if the upstream step has not completed in its entirety yet. This can be useful particularly in cases where there are large multi-assets with downstream assets that depend on only a subset of the assets in the upstream step.
The logsForRun resolvers and eventConnection resolvers in the Dagster GraphQL API will now apply a default limit of 1000 to the number of logs returned from a single graphql query. The cursor field in the response can be used to continue iterating through the logs for a given run.
[dagster-airbyte] @airbyte_assets and AirbyteWorkspaceComponent (previously AirbyteCloudWorkspaceComponent) now support Airbyte OSS and Enterprise.

Bugfixes

Fixed an issue where the dagster_dg_cli package failed to import when using Python 3.9.
Fixed an issue with AutomationCondition.eager() that could cause runs for materializable assets to be launched at the same time as an upstream observable source asset that had an automation condition, even if the upstream observation would not result in a new data version.
Fixed an issue which could, in some circumstances, cause errors during Declarative Automation evaluation after a dynamic partition was deleted.
Fixed an issue that could cause confusing errors when attempting to supply attributes configuration to Component subclasses that did not inherit from Resolvable.
Added a Matillion kind tag, thanks @RobBrownFreeAgent!
[ui] Fixed an issue where the "Report materialization events" dialog for partitioned assets only worked if the partition was failed or missing.
[ui] Fixed a browser crash which could occur in the global asset graph.
[ui] Fixed a bug with the sensor preview behavior that would cause run requests contianing run_keys that had already been submitted to show up in the preview result.
[dagster-dbt] Fixed an issue that would cause the DbtCloudWorkspace to error before yielding asset events if the associated dbt Cloud run failed. Now, it will raise the error after all relevant asset events have been produced.
[dagster-dbt] Added the dbt-core dependency back to dagster-dbt as it is still required for the dbt Cloud integration. If both dbt-core and dbt Fusion are installed, dagster-dbt will still prefer using dbt Fusion by default.

Documentation

Introduced a new "Post-processing components" guide.
Fixed incorrect YAML code snippets for alert policies docs page.
Fixed incorrect chart keys in Helm documentation. Thanks, @charlottevdscheun!
Fixed incorrect owner tags in Components docs. Thanks, @aaronprice00!

Dagster Plus

Improved the Dagster+ agent's retry behavior during when it experiences outbound connection timeouts while a code location is being deployed.

1.11.9 (core) / 0.27.9 (libraries)

New

Subclasses of Resolved now support fields of type dict[str, T].
[ui] Added a new 'arrow' icon to the set of supported kind tags (thanks @aleewen!)

Bugfixes

Launching a backfill of a non-subsettable multi-asset without including every asset will now raise a clear error at backfill submission time, instead of failing with a confusing error after the backfill has started.
Fixed an issue where passing in an empty list to the assetKeys argument of the assetsOrError field in the GraphQL API would return every asset instead of an empty list of assets.
[dagster-dbt] Fixed an issue that would cause the DbtCloudWorkspace to error before yielding asset events if the associated DBT Cloud run failed. Now, it will raise the error after all relevant asset events have been produced.

Dagster Plus

Serverless pex builds now support pyproject.toml-based packages.

1.11.8 (core) / 0.27.8 (libraries)

New

A param exclusions was added to time window partition definitions to support custom calendars.
The dagster library now supports protobuf==6.x
[dg] dg scaffold defs --help now shows descriptions for subcommands.
[dg] A new dg check toml command has been added to validate your TOML configuration files.
[dagster-databricks] The DatabricksAssetBundleComponent has been added in preview. Databricks tasks can now be represented as assets and submitted via Dagster.
[dagster-dbt] The DbtProjectComponent now takes an optional cli_args configuration to allow customizing the command that is run when your assets are executed.
[dagster-dbt] The polling interval and timeout used for runs triggered with the DbtCloudWorkspace resource can now be customized with the DAGSTER_DBT_CLOUD_POLL_INTERVAL and DAGSTER_DBT_CLOUD_POLL_TIMEOUT environment variables.
[ui] Added the ability to filter to failed/missing partitions in the asset report events dialog.
[ui] A tree view has been added in the Global Asset Lineage.
[telemetry] Telemetry disclaimer now prints to stderr.

Bugfixes

Fixed an issue that would require config provided to backfills to contain config for all assets in the code location rather than just the selected ones.

1.11.7 (core) / 0.27.7 (libraries)

New

dg will now report multiple detected errors in a configuration file instead of failing on the first detected error.
It is now possible to supply run config when launching an asset backfill.
Updated the root URL to display the Overview/Timeline view for locations with schedules/automations, but no jobs (thanks @dschafer!)
Added tzdata as a dependency to dagster, to ensure that declaring timezones like US/Central work in all environments.
[dagster-dg-cli] Updated scaffolded file names to handle consecutive upper case letters (ACMEDatabricksJobComponent → acme_databricks_job_component.py not a_c_m_e_databricks_job_component.py)
[dagster-dg-cli] Validating requirements.env is now opt-in for dg check yaml.
[dagster-dbt] DAGSTER_DBT_CLOUD_POLL_INTERVAL and DAGSTER_DBT_CLOUD_POLL_TIMEOUT environment variables can now be used to configure the polling interval and timeout for fetching data from dbt Cloud.

Deprecations

[components] Removed deprecated and non-functional asset_post_processors fields from SlingReplicationCollectionComponent and AirflowInstanceComponent.

1.11.6 (core) / 0.27.6 (libraries)

New

Allow explicit git platform selection in link_code_references_to_git, thanks @chazmo03!

Bugfixes

Fixed issue causing AutomationCondition.replace to not update built-in sub-conditions that did not have an explicit label, thanks @dschafer!
Fixed an issue where assets were considered stubs if they were a stub in any code location.
Projects using components no longer cause "job definitions changed while uploading" errors on older agent versions.
[dagster-dbt] Fixed a bug that could cause execution to fail if enable_code_references was set to True on the DagsterDbtTranslatorSettings.

Documentation

Updated documentation of dagster.yaml to include the nux option, thanks @dwisdom0!

Dagster Plus

Fix "Create a support ticket" dialog submissions.

1.11.5 (core) / 0.27.5 (libraries)

New

Static functions on classes decorated with @template_var can now optionally accept a ComponentLoadContext argument.
[dg] A MCP server is available to expose dg CLI capabilities to MCP clients. See the dg mcp CLI group for details.
[dagster-dbt] The dagster-dbt package no longer has a dependency on dbt-core.
[dagster-dbt][preview] Users of the dbt Fusion CLI can now use the dagster-dbt package to run dbt commands with no changes to their existing dagster code. This support is still in preview as the format of the log messages produced by the dbt Fusion CLI is still subject to change. Let us know if you notice any incompatibilities.
[dagster-databricks] Added a PipesDatabricksServerlessClient to support Databricks Serverless jobs with Dagster pipes.
[dagster-databricks] Added additional options for cluster configuration (thanks @jmccartin!)

Bugfixes

Various bugfixes for backfills that target assets which change their partitions definition mid-backfill.
[ui] Fixed issue that could cause errors related to the ObjectMetadataValue class.

Documentation

Added docs for using Spark Connect and Databricks Connect with Dagster.

1.11.4 (core) / 0.27.4 (libraries)

New

Schedules now support specifying a subset of asset checks to execute in a RunRequest.
[dg] A new docs integrations cli is available for viewing an index of available integrations.
[ui] Jobs can now be filtered with a selection syntax.
[dagster-tableau] Dashboards containing hidden sheets are now correctly linked to upstream data sources.
[dagster-tableau] Tableau sheets and dashboards now produce observation events instead of materialization events when using refresh_and_poll inside the @tableau_assets asset decorator.

Bugfixes

Fixed a set of issues with the asset backfill system that could, in rare cases, cause runs to be kicked off out of order or never be kicked off.
Fixed issue where additional args passed into a PermissiveConfig object could not be accessed via dot notation (thanks @CarlyAThomas and @BoLiuV5!)
Duplicate definitions are no longer incorrectly created when including jobs for schedules & sensors when loading from a defs folder.
[components] Fixed an incorrect import being generated when scaffolding a component in Python. (thanks, @ajohnson5!)
[dg] when assets are selected via --assets, other definitions types will no longer be displayed.

Documentation

Fixed typo in the polars.md example doc (thanks @j1wilmot!)
Fixed a typo in the ETL tutorial docs (thanks @yumazak!)

1.11.3 (core) / 0.27.3 (libraries)

New

Introduced AssetExecutionContext.load_asset_value, which enables loading asset values from the IO manager dynamically rather than requiring asset values be loaded as parameters to the asset function. For example:
```
@dg.asset(deps=[the_asset])
def the_downstream_asset(context: dg.AssetExecutionContext):
  return context.load_asset_value(dg.AssetKey("the_asset"))
```
Expose asset_selection parameter for submit_job_execution function in DagsterGraphQLClient, thanks @brunobbaraujo!
Large error stack traces from Dagster events will be automatically truncated if the message or stack trace exceeds 500kb. The exact value of the truncation can be overridden by setting the DAGSTER_EVENT_ERROR_FIELD_SIZE_LIMIT environment variable.
Added databento, ax, and botorch kind tags, thanks @aleewen and @CompRhys!
[dagster-k8s] Added the option to include ownerReferencess to k8s executor step jobs, ensuring that the step job and step pod are properly garbage collected if the run pod is deleted. These can be enabled by setting the enable_owner_references flag on the executor config.
[components] Added dg list component-tree command which can be used to visualize the component tree of a project.

[components] Added the ability to reference, load, and build defs for other components in the same project. In YAML, you may use the load_component_at_path and build_defs_at_path functions:

type: dagster.PythonScriptComponent

attributes:
  execution:
    path: my_script.py
  assets:
    - key: customers_export
      deps:
        - "{{ load_component_at_path('dbt_ingest').asset_key_for_model('customers') }}"

Bugfixes

[components] Python component instances are now properly loaded from ordinary Python files.
Fixed an issue that could cause asset backfills to request downstream partitions at the same time as their parent partitions in rare cases.
Fixed a bug that could cause @graph_assets to not properly apply the AllPartitionMapping or LastPartitionMapping to dependencies, thanks @BoLiuV5!
Fixed a bug that could cause code locations to fail to load when a custom python AutomationCondition was used as the operand of AutomationCondition.any_deps_match() or AutomationCondition.all_deps_match().
The create-dagster standalone executable now works on all Linux versions using glibc 2.17 or later.
[ui] Partition tags are now properly shown on the runs page, thanks @HynekBlaha!
[ui] Using the "Retry from Asset Failure" option when retrying a run that failed after materializing all of its assets will now correctly indicate that there is no work that needs to be retried.
[ui] The timeline tab on the Overview page now shows runs by sensor when they were launched by an automation condition sensor, instead of showing every row in the same "Automation condition" row.
[ui] Fixed an issue where filtering to an asset group on the lineage page did not apply the correct repository filter in code locations with multiple repositories.
[ui] Fixed an issue where asset checks referencing asset keys that did not exist in the asset graph did not appear in the Dagster UI.
[ui] Fixed occasional crashes of the asset graph on the asset lineage tab.
[dagster-dbt] The @dbt_assets decorator and associated APIs no longer error when parsing dbt projects that contain an owner with multiple emails.

Documentation

Fixed typos in the ELT pipeline tutorial, thanks @aaronprice00 and @kevJ711!
Fixed typos in components docs, thanks @tintamarre!
Fixed error in Sling docs, thanks @nhuray!
Updated the AutomationCondition.replace type signature to provide callers more information about the returned AutomationCondition, thanks @dschafer!

Dagster Plus

Catalog search now uses a similar syntax to the selection syntax for filtering by attribute (eg: Code location: location -> code_location: location.

1.11.2 (core) / 0.27.2 (libraries)

New

The dagster package now supports Python 3.13.
[dagster-tableau] Tableau assets can now be subsetted and materialized individually. #31078
[dagster-snowflake-polars] The new dagster-snowflake-polars package adds a SnowflakePolarsIOManager that can be used to read and write Snowflake tables using Polars.

Bugfixes

[ui] Fixed some cases where strings would be incorrectly middle-truncated.

Documentation

[dbt] Fixed incorrect reference to dbt_profiles.yml in the dagster-dbt tutorial (thanks @EFox2413!).
[dbt] Added documentation for the new dbt Cloud integration.

Dagster Plus

[ui][observe] You can now bulk add/remove assets to/from your favorites.

1.11.1 (core) / 0.27.1 (libraries)

New

dagster definitions validate will now raise an exception if there are invalid partition mappings between any assets in your asset graph (for example, an upstream and downstream asset with time-based partitions definitions using different timezones).
Performance improvements for run dequeuing when there are many queued runs using pools.
[ui] For times in the last two days, Dagster UI now shows e.g. "47 hours ago" instead of "2 days ago."
[ui] Asset checks now show whether they are blocking.
[dagster-tableau] Tableau workbooks fetched in Dagster can now be filtered and selected using the WorkbookSelectorFn.

Bugfixes

@graph now correctly allows omitting inputs when the destinations of an input mapping have a default value.
@record classes no longer create problematic namespace conflicts with the symbol "check."
[ui] Filtering by partition on the Asset Events view now works as expected.
[ui] Assets without definitions can now be properly wiped in the Asset Catalog.

Documentation

Added clearer setup instructions for Windows and Linux users to the Contributing documentation, thanks @oohwooh!
Fixed broken links in the Contributing documentation, thanks @emmanuel-ferdman!

Dagster Plus

[ui] Fixed an issue that prevented status filtering from working within the selection syntax.

dg & Components

Fixed an issue where dg scaffold github-actions would invoke the dg CLI with outdated parameters for serverless orgs.
[dagster-dlt] Fixed an issue where the default scaffolded dlt load led to an invalid asset key.

1.11.0 (core) / 0.27.0 (libraries)

Major changes since 1.10.0 (core) / 0.26.0 (libraries)

Components — Configurable, reusable building blocks for data pipelines (now stable)

Components, first released as Preview in 1.10.6, have reached Release Candidate status. APIs are stable, fully documented, and are the recommended, production-ready defaults for new Dagster projects.

Simplified interface: A short YAML block in defs.yaml, or a lightweight Component subclass in Python, lets you spin up arbitrary Dagster definitions (such as assets, resources, schedules, checks, and more), removing boilerplate while keeping every definition type-checked.
Custom components: Subclassing Component lets you wrap any internal script or third-party tool behind a strongly-typed interface; get the same autocompletion and docs as first-party integrations.
Pythonic templating: Register variables or helpers with @template_var so pipeline authors edit parameters directly in YAML without touching Python. Optional inline components keep small bits of Python co-located.
Powerful tooling: High quality errors, strongly-typed schemas, rich CLI support, and auto-generated docs directly in the UI.
Read the docs: https://docs.dagster.io/guides/build/components/

`dg` — the everything-CLI for developer experience (now stable)

The dg CLI provides a single surface for scaffolding, local iteration, execution, and static analysis; introduced as Preview in 1.10.6, it has also reached Release Candidate status.

Scaffolding: Namespaced scaffold commands such as dg scaffold defs dagster.asset assets.py, dg scaffold component … to quickly generate definitions without boilerplate.
Local development & ad-hoc execution: dg dev spins up local instance with UI; dg launch runs jobs and assets from the CLI.
Introspection & checks: dg list enumerates definitions; dg check validates YAML and Python code.
Utility bundle: dg utils provides support for Cursor/VSCode schema setup, JSON-schema export, and deep component inspection.
CLI reference: https://docs.dagster.io/api/dg/dg-cli

`create-dagster` — one-shot project scaffold

create-dagster scaffolds a ready-to-run Dagster project or workspace in one command (pipx, uvx, brew, curl friendly).

create-dagster project supersedes the dagster project scaffold flow with the modern src/ + defs/ layout and a pre-wired local dg CLI, with no active Python environment required.
Docs: https://docs.dagster.io/guides/build/projects/creating-a-new-project

Core Orchestration

Retry from asset failure with multi‑assets – a new re‑execution option allows rerunning only failed assets in multi-asset steps, rather than all assets within a failed step.
Checks emitted from ops – AssetCheckEvaluation objects can now be yielded from within ops.
Per‑asset hooks – @asset now accepts a hooks argument for success/failure callbacks.
Backfill improvements
- BackfillPolicy is now GA
- Backfills can now use a threadpool for more efficient run submission. By default, the daemon will now use 4 workers.
Concurrency enhancements – run blocking is now on by default for concurrency pools, preventing oversubscription when scheduling runs.
FreshnessPolicy — A new FreshnessPolicy API is introduced, replacing the deprecated FreshnessPolicy API (which has been renamed to LegacyFreshnessPolicy). The API is under active development, and will eventually also supersede freshness checks as the primary way of specifying and evaluating asset freshness. For more details, check out the GitHub announcement and the docs.

UI

Unified asset selection syntax lets you combine lineage traversal, attribute filters, and boolean logic in a single expression; the same syntax powers Alerts, Insights, Saved Selections, the Asset Catalog, and Components YAML. An analogous op-selection syntax is available in the Gantt view of a single run. [docs]
Redesigned, customizable asset-graph nodes with health overlays and deeper zoom.
Runs › Backfills consolidates all backfill activity under the Runs page for faster navigation.

Integrations

Fivetran integration GA: the FivetranWorkspace resource is now GA [docs].
Airflow (Beta): Airflow Component lets you surface Airflow DAGs inside Dagster for mixed-orchestrator observability [docs].
dbt Cloud (Beta): first-class job launches and lineage capture [docs].
Apache Iceberg (Preview): Iceberg IOManager writes/reads lake-house tables [docs].
Integrations Marketplace (Preview): “Integrations” tab to browse first- and third-party integrations natively in Dagster UI (enable via User Settings → “Display integrations marketplace”).

Changes since 1.10.21 (core) / 0.25.21 (libraries)

New

MaterializeResult now optionally supports a value parameter. If set, the asset's IOManager will be invoked. You may also optionally annotate your return types with -> MaterializeResult[T] to indicate the specific value type you expect.
Allow importing FreshnessPolicy from dagster.deprecated.
Adds a custom error message when importing FreshnessPolicy from the dagster module.
freshness_policy parameter now used to pass the new freshness policies (InternalFreshnessPolicy) to asset specs, asset decorator, etc.
Removed @preview from @definitions.
[components] Introduce build_defs_for_component, which can be used to build defs from a component instance outside of a defs folder.
[components] Removed @preview from DefsFolderComponent.
[components] Removed @preview decorator from load_from_defs_folder and enhanced its documentation with detailed usage instructions and examples.
[components] The asset_post_processors field on SlingReplicationCollectionComponent and AirflowInstanceComponent is no longer supported, and has been replaced with the top-level post_processors field.
[dagster-tableau] Tableau workbooks fetched in Dagster can now be filtered and selected using the WorkbookSelectorFn.
[dagster-dbt] dagster-dbt now supports dbt-core 1.10.
[dagster-dbt] dbt tests with error severity are now modeled as blocking asset checks, ensuring that if a run fails due to a dbt test failure, the connected model is included in a retried run if it is retried using the experimental "Enable retries from asset failure" feature. This change should not result in any behavior changes during execution since the dbt cli already fails the step and any downstream models if dbt tests fail with error severity, but could change the behavior that depends on blocking tests.
[dagster-sigma] When fetching data from the sigma API, the SigmaOrganization resource will now use an exponential backoff strategy in response to getting rate limited instead of immediately failing.
[dagster-sling] Removed asset_post_processors on SlingReplicationCollectionComponent and uses generic post_processing key at top-level instead.
[dagster-pandera] Adds support for version 0.24.0 of the pandera library to dagster-pandera, dropping support for pandera 0.23.1 and below.
[ui] Show whether an asset check is blocking.

Bugfixes

[dagster-dlt] Fixed an issue where the default scaffolded dlt load led to an invalid asset key.
Fixed a bug with DAGSTER_GRPC_SENSOR_TIMEOUT_SECONDS not being propagated through from daemon to code servers, resulting in the sensor still timing out at 60 seconds if the dagster code-server start entrypoint was used.
[dagster-sling] Fixed an issue with the SlingResource that could cause values specified with EnvVars to provide the env var name instead of the env var value to the sling replication configuration.
[ui] Fix timestamps on the "Recent events" view on some assets.
[ui] Fix "View" link color on code location status toasts.

Breaking Changes

Definitions and AssetsDefinition will now error if they get different AssetSpecs with the same key.
Renamed FreshnessPolicy to LegacyFreshnessPolicy.

Deprecations

[dagster-sling] The SlingReplicationCollectionComponent is now configured by passing connections directly. This means that the sling yaml field and the resource python argument are both deprecated, and will be removed in a future release. The connections field in yaml now shares a format with Sling's env.yaml.
[components] The load_defs entrypoint has been deprecated in favor of load_from_defs_folder, which takes a single path for a folder to load definitions from rather than a module object.
[components] The no longer recommended inline-component subcommand of dg scaffold defs is now hidden from --help.
[components] load_defs is no longer public.

Dagster Plus

The billing page has been updated to show available plans front-and-center and recommend a plan based on trial usage.
The trial "days remaining" banner and "choose a plan" CTAs have been re-designed.

1.10.21 (core) / 0.26.21 (libraries)

New

[dagster-tableau] The tableau_assets decorator is now available to create the asset definitions of all materializable assets in a given Tableau workspace. These assets can be subsetted and materialized using the TableauCloudWorkspace.refresh_and_poll method.
[dagster-tableau] The deprecated get_*_asset_key methods on the DagsterTableauTranslator class have been removed.
[ui] Show tags for a Job on the sidebar of the Job page. #30728

Bugfixes

Fixed a bug where "falsey" defualt config values were not showing up in the launchpad. This has been fixed for all cases except the empty dictionary.
Fixed an issue with the new "re-execute from asset failure" functionality that could cause additional steps to be included if the job was previously re-executed from step failure.
Fixed an issue where the staleStatusByPartition, staleCausesByPartition, and dataVersionByPartition fields on the graphql AssetNode would fail when called on an asset with dynamic partitions.
[dagster-dbt] Fixed an issue where creating a DagsterDbtTranslator that didn't call the parent class's constructor in its __init__ method would raise an Exception during execution.
[dagster-sling] Removed upper-bound pin on the sling dependency.
[dagster-sling] Fixed an issue with the SlingResource that could cause values specified with EnvVars to provide the env var name instead of the env var value to the sling replication configuration.
[dagster-fivetran] Introduced a dagster-fivetran snapshot command, allowing Fivetran workspaces to be captured to a file for faster subsequent loading.

Dagster Plus

[ui] The integrations marketplace (currently behind a feature flag) now allows you to create, edit, and delete private packages.

dg & Components

Added FunctionComponent, PythonScriptComponent, and UvRunComponent to make it easier to define arbitrary computations that execute assets or asset checks when invoked.
Weekly and arbitrary time-window partitions can now be provided to the partitions_def asset customization in YAML.
A clean and informative error message is now printed when an invalid set of parameters is passed to dg scaffold defs ....
Component asset specs now allow specifying partition definitions through the partitions_def key.
The dg cache is no longer operative, since dg now operates in the same python environment as the projects it manipulates. Config options for the cache have been removed.
The load_defs entrypoint has been deprecated in favor of load_from_defs_folder, which takes a single path for a folder to load definitions from rather than a module object.
The asset_post_processors field on SlingReplicationCollectionComponent and AirflowInstanceComponent is no longer supported, and has been replaced with the top-level post_processors field.
Fixed an issue where dg projects using autoload_defs=true could not be deployed to Dagster+.
Removed @preview from Component.
ComponentLoadContext is now frozen and no longer in preview.
Resolved subclasses now support Enum fields.

1.10.20 (core) / 0.26.20 (libraries)

New

The @asset decorator now supports a hooks argument to allow for functions to be executed on asset success / failure (thanks @brunobbaraujo)!
The log message produced when an asset check is evaluated now includes its pass / fail state.
The @multi_asset_check decorator now supports the pool argument.
[dagster-dbt] The DagsterDbtTranslator class now has a get_asset_check_spec method which can be overridden to customize the AssetCheckSpecs that are produced for each individual dbt test.

Bugfixes

Fixed an issue where setting the non-public blocking attribute on an AssetCheckSpec would halt execution of the step as soon as any asset check failure was emitted, even if the step still had asset materializations or check evaluations to emit that were not downstream of the failed asset check. Now that this issue has been fixed, the blocking attribute on AssetCheckSpec has been made a public attribute. If you were making use of the blocking attribute on AssetCheckSpec before it was public and relying on the previous behavior, you should exit from your asset evaluation function after emitting an AssetCheckFailure from within your multi-asset in order to halt further execution of the step.
Fixed a bug where GraphDefinition.to_job() would not work if an op had a custom IO manager key.
Fixed an issue that would cause .allow() and .ignore() applications to not propagate through .since() automation conditions.
Fixed a bug where assets with cross-location dependencies could sometimes be incorrectly reported as "Unsynced".
Fixed an issue where dagster dev was sometimes failing to load code locations with a "Deadline Exceeded" error unless the --use-legacy-code-server-behavior flag was set.
The backfill daemon can now be configured to use a threadpool executor via helm (thanks @hynekblaha)!
[dagster-gcp] Added a google-cloud-bigquery>=1.28.3 pin to correctly reflect the lowest compatible version.

Breaking Changes

[ui] Moved legacy Auto-materialize (global AMP) tab from Overview to Automations.

Dagster Plus

Fixed an issue where certain rare network conditions could cause steps to hang while uploading compute logs after a step finished.
[ui] For users with the new Observe UIs enabled, the Asset Health and Resources tabs are no longer shown on the Timeline page.

dg & Components (Preview)

Fix a bug with dg check yaml where valid component type names were rejected if they were not registered (i.e. visible from dg check components).
dg create-dagster now warns when scaffolding a project or workspace if it is not the latest version.
The project.registry_modules configuration can now accept wildcards (e.g. foo_bar.components.*). This will register any module matching the pattern with dg.
The env YAML function now errors if the specified env var is unset. Default values can be provided as an additional argument: {{ env('MY_ENV_VAR', 'default') }}
defs.yaml files can now specify a component in the module where it is defined, as opposed to just the module where it is exposed in the dg registry.
The PipesSubprocessScriptCollectionComponent has been removed.
Running dg commands such as dg check defs and dg dev in a project folder that is part of the workspace will now only apply to that project, instead of every project in the workspace.
Scaffolded projects no longer contain a "components" directory or a Python dagster_dg_cli.plugin entry point.
Scaffolded components can now be placed anywhere within a project module hierarchy.
The entry point group used by shared libraries exposing custom components to dg has been renamed from dagster_dg_cli.plugin to dagster_dg_cli.registry_modules (projects no longer need to define an entry point group at all).
dg list plugin-modules has been renamed to dg list registry-modules.
dg list defs now supports configuring output columns with the --columns/-c option.
[dagster-airbyte] Introduced a AirbyteCloudWorkspaceComponent which can be used to pull in Airbyte Cloud connections into Dagster

1.10.19 (core) / 0.26.19 (libraries)

New

The database table used by the DbIOManager is now configurable via "table" output (asset) metadata key #30310
Changed default settings for backfill daemon to use_threads=True, num_workers=4. Thanks @HynekBlaha!
A new function build_asset_check_context can be used to build asset check contexts for direct invocation.
Changed Definitions.get_all_asset_specs to only return assets directly passed in as AssetSpecs or AssetsDefinitions.
Removed selection argument from Definitions.map_asset_specs. If selection is needed use the new Definitions.map_resolved_asset_specs.
Definitions.get_job_def now warns when it finds an unresolved job or no job.
Changed Definitions.get_assets_def to return an AssetsDefinition without resolving if it was passed in directly.
[dagster-dbt] build_schedule_from_dbt_selection now supports a selector argument, allowing you to use yaml-based selectors.
[dagster-k8s] Pods created by the Kubernetes run launcher and executor from Dagster Plus now include the dagster/deployment-name label.
[dagster-pipes] Pipes execution errors are no longer treated as framework errors, meaning they properly invoke RetryPolicies.
[helm] Backfill daemon configuration now supported. Thanks @HynekBlaha!
[ui] Show relative start time on runs in run timeline hover lists. #30327

Bugfixes

[ui] Fixed live updating of asset materialization statuses in asset graph.

dg & Components (Preview)

Running dg commands like dg check defs and dg dev in a project folder that is part of the workspace will now only apply to that project, instead of every project in the workspace.
dg list defs now supports the --assets/-a option, to show only assets matching the provided selection.
dg list defs now supports a --path argument to subset the defs files shown.
The create-dagster workspace command now accepts the same required path argument as the create-dagster project command, instead of defaulting to a dagster-workspace subfolder of the current working directory.
The entry point group used by shared libraries exposing custom components to dg has been renamed from dagster_dg_cli.plugin to dagster_dg_cli.registry_modules (projects no longer need to define an entry point group at all).
dg list plugin-modules has been renamed to dg list registry-modules.
Newly scaffolded projects no longer contain a "components" directory or a Python dagster_dg_cli.plugin entry point.
Newly scaffolded components can now be placed anywhere within a project module hierarchy.
Resolvable subclasses can now use bare dict and list as field types.
Resolving a Resolvable subclass will no longer change empty strings to None.
Users can define multiple @definitions-decorated functions in a single module in the defs hierarchy and they are automatically merged and incorporated into the project.
Added @component_instance to replace @component. This allows multiple component instances in a python file.
Fixed an issue where dg commands would sometimes output extra dagster_telemetry_logger lines to stdout at the end of commands.
Added @template_var as an alternative approach for defining variables in a templating context.

1.10.18 (core) / 0.26.18 (libraries)

New

BackfillPolicy is now marked as generally available (GA).
Optimized the order of the @asset decorator overloads to make custom wrappers around the asset decorator easier. Thanks @jonathanunderwood!
[dagster-slack] Added get_client() to SlackResource.

Bugfixes

Definitions and AssetDefinition will now warn if they get different AssetSpecs with the same key. This will become an exception in 1.11.
Functions that load all definitions from modules like load_definitions_from_modules now handle duplicate AssetSpecs.
Fixed typo in logging. Thanks @eli-b!
[dagster-dbt] An issue occurring when using dbt selection arguments with a dbt project using saved queries and semantic models has been fixed.
[dagster-fivetran] Fixed an issue with load_assets_from_fivetran_instance where assets whose asset keys have been customized using a Fivetran translator would lead to an exception.

Documentation

Fixed grammar issues in GCP docs. Thanks @D1n0!
Fixed missing docs for required_resource_keys in @sensor. Thanks @seyf97!

Breaking Changes

Definitions and AssetDefinition will now warn if they get different AssetSpecs with the same key. This will become an exception in 1.11.

Dagster Plus

[dagster-cloud-cli] Added a --wait to the dagster-cloud job launch command that makes it wait until the launched run copmletes. Thanks @stevenayers!
[fix][dagster-cloud-cli] Fixed an issue where the dagster-cloud cli failed to deploy PEX projects on python 3.12 in certain environments without setuptools already installed.

dg & Components (Preview)

The dg CLI is now installed in each project's Python environment instead of as a global tool. If you previously had dg installed globally and are upgrading, first uninstall the global dg tool (uv tool uninstall dagster-dg or pip uninstall dagster-dg) and add dagster-dg-cli as a dependency to each of your projects. Newly scaffolded projects will automatically include the dg CLI going forward.
A new create-dagster CLI has been added for scaffolding projects instead of workspaces. uvx create-dagster project has replaced dg scaffold project, and uvx create-dagster workspace has replaced dg scaffold workspace. The commands take identical arguments.
Definitions and component instances are now scaffolded with dg scaffold defs <scaffolder> instead of dg scaffold <scaffolder>.
The component.yaml file to specify a component instance is now called "defs.yaml". "component.yaml" will remain supported for several weeks, but is deprecated.
The lib folder in newly scaffolded projects has been renamed to "components".
dg scaffold component-type has been renamed to dg scaffold component.
dg list plugins has been renamed to dg list plugin-modules and now outputs only plugin module names, not plugin objects.
dg list component now lists component types instead of instances.
Exports from dagster.components are now available in the top-level dagster module.
Added @component_instance to replace @component, which allows multiple component instances in a python file.
If you type a partial component name for dg scaffold defs <component>, you will now be prompted with possible matches.
When component classnames are unique, you can now use just the classname as an alias for the fully qualified name when running dg scaffold defs <component>.
dg launch now supports passing config files through --config/-c.
Added Component.from_attributes_dict and Component.from_yaml_path to help with testing.
Added dagster.components.testing.component_defs utility to help with testing components.
Scaffolded schedules and sensors in dg are now loadable by default.
dg scaffold defs inline-component can now be used to create inline components and corresponding instances.
dg list defs now outputs resources.
[fix] The dagster-dbt cli flag --components flag now correctly finds DbtProjectComponent again.
[dagster-fivetran] Added a FivetranAccountComponent which can be used to pull in Fivetran connections into Dagster.
[dagster-dlt] The DltLoadCollectionComponent scaffolder no longer attempts to automatically construct loads for the given source and destination type.
Fixed an issue where components failed to load when using load_assets_from_airbyte_instance or other APIs that return a CacheableAssetsDefinition.

1.10.17 (core) / 0.26.17 (libraries)

Bugfixes

Fixed an issue where an error was displayed in the UI while viewing run logs
[dagster-dbt] Fixed an issue occurring when using dbt selection arguments with a dbt project using semantic models.

1.10.16 (core) / 0.26.16 (libraries)

New

typing_extensions is now pinned to >=4.11.0 instead of >=4.10.0.
[ui] Viewing an automation condition evaluation now automatically expands the set of applicable sub-conditions.
[ui] Added the ability to navigate from an automation condition evaluation to upstream automation condition evaluations.
[ui] Added an asset graph node facet for viewing automation conditions and the most recent evaluation. This can be enabled in the user settings via a feature flag (Enable faceted asset nodes).
[ui] A new experimental integrations marketplace tab is now available and can be enabled in your user settings via a feature flag (Display integrations marketplace). It provides easy access to the gallery of dagster-supported plugins.

Bugfixes

Fixed an issue with the ExternalNotebookDataRequest GRPC call that would allow it to access files outside of the current directory.
Fixed an issue that would cause op_tags set on @observable_source_assets to be dropped from the underlying step context object when executed.
Fixed an issue where dagster dev would sometimes raise a gRPC error when loading several code locations at once.
Fixed an issue where setting an environment variable to the string "false", "0" or "None" for a dagster config field using a BoolSource would evaluate to True.
Fixed an issue where specifying executable_path in a workspace.yaml file to run code locations in a different virtual environment would not correctly inherit the PATH of that virtual environment in the code location.
[dagster-dbt] Fixed an issue causing dbt CLI invocation to fail when materializing assets when OpExecutionContext was used as the type hint for the context.
[dagster-deltalake] Corrected the timeout property data type in ClientConfig to be str instead of int (thanks, @edsoncezar16!)

Documentation

Added additional config fields to the K8sRunLauncher example (thanks, @nishan-soni!)
Corrected broken links on the automation landing page (thanks, @briandailey!)

Dagster Plus

[ui] Alert policy event tags no longer appear red and yellow outside of the policy notification history.

dg & Components (Preview)

Added suggestions to component model error messages when using built-in models for common classes such as AssetKey and AssetSpec.
dg list env now displays whether env vars are configured in each Dagster Plus scope.
Introduced Resolver.passthrough() to avoid processing fields on a component model.
ResolvedAssetKey is now exported from dagster.components.
dg init has been removed. dg scaffold project and dg scaffold workspace should be used instead.
Fixed an issue where dg dev failed with a temporarily file permissions error when running on Windows. Thanks @polivbr!

1.10.15 (core) / 0.26.15 (libraries)

New

Added a config section to dagster.yaml to enable submitting backfill runs in a threadpool.
Expanded definition time validation for partition mappings to avoid runtime errors querying asset status.
[ui][beta] You can now re-execute a run that targeted a multi-asset from the point of asset failure instead of step failure, meaning only assets that failed or were skipped will be re-executed. To enable this option, turn on the Enable retries from asset failure feature flag in your user settings.
[ui] Made it easier to select and copy image names for code locations.
[ui] Added asset lineage navigation within the automation condition evaluation tree.
[ui] Viewing an evaluation tick now auto-expands the set of applicable automation conditions.
[ui] Added an asset graph node facet for viewing automation conditions and the most recent evaluation in the global asset graph.
[dagster-fivetran] The FivetranWorkspace resource is now marked as generally available (GA).

Bugfixes

Changed asset wipes to also wipe associated asset check evaluations.
[dagster-fivetran] Fixed an issue causing the Fivetran integration to fail when the schema config does not exist for a connector.

Documentation

Fixed a broken link in the airflow migration docs. Thanks @jjyeo!
Updated example snippet to include a missing type hint. Thanks @agrueneberg!

Deprecations

[dagster-fivetran] The FivetranResource resource is now deprecated. Use the new FivetranWorkspace resource instead.

dg & Components (Preview)

Changed Scaffolder.scaffold to have the params object as an attribute of the ScaffoldRequest object instead of a dictionary. This is a breaking change for those who have implemented a custom scaffolder.
Added support for scaffolding resources via dg scaffold dagster.resources path/to/resources.py.
Added support for the usage of @definitions in the defs hierarchy.
Dagster components now include code references by default. When viewing an asset emitted by a component in the asset catalog, this will allow you to jump to the backing component.yaml file in your editor.
[dagster-dbt] DbtProjectComponent fields now properly evaluate templates.
[dagster-sling] Updated the SlingReplicationCollectionComponent from using the asset_attributes parameter to translation, in order to match our other integration components.
Fixed an issue where dg dev failed with a temporary file permissions error when running on Windows. Thanks @polivbr!

1.10.14 (core) / 0.26.14 (libraries)

New

[dagster-tableau] Refined Tableau integration for API 3.25 or greater.
[dagster-tableau] Data sources with extracts can now be materialized in Tableau assets created with build_tableau_materializable_assets_definition.
[ui] Added kinds tag for treasuredata.
[ui] Add Supabase kind icon.

Bugfixes

Fixed a bug which could cause an error when calling MultiPartitionsDefinition.has_partition_key() on invalid keys.
Fixed a bug where the default multiprocess executor would fail runs where the child process for a step crashed, even if a retry policy resulted in a successful retry of that crashed step.
Fixed a bug with AutomationCondition.initial_evaluation which could cause it to return False for an asset that went from having a condition, to having no condition at all, back to having the original condition again.
[ui] Fixed an issue which could cause the "Target" field of AutomationConditionSensorDefinitions to render incorrectly when exactly one asset check was defined in a code location.
[dagster-dbt] Fix DagsterDbtTranslatorSettings.enable_source_tests_as_checks returning duplicate asset checks.

Documentation

Added a sample Dagster+ ECS CloudFormation template which incorporates private subnets.
Fixed incorrect storage values in the Fargate task section of the AWS deployment guide, thanks @alexpotv!
Updated log stream docs, thanks @jjyeo!
Fixed broken code in the configurable resources guide, thanks @nightscape!

Deprecations

dagster.InitResourceContext.dagster_run has been deprecated in favor of InitResourceContext.run.

dg & Components (Preview)

[dagster-k8s] PipesK8sComponent has been added.
Dagster components no longer change the working directory while they are being loaded. This allows components to store relative paths and ensure that they will still work when accessed outside of the component loading codepath. This change may affect user-defined components that depend on Path.cwd() or os.getcwd(). Instead, you should use a path relative to the current source file when loading paths in a component, using the context.resolve_source_relative_path method (see resolve_dbt_project in DbtProjectComponent for an example).
Added dagster.job scaffolder.
[dagster-dbt] The DbtProjectComponent now has a translation_settings argument for adjusting DagsterDbtTranslatorSettings.
[dagster-dbt][fix] DbtProjectComponent fields now properly evaluate templates.
Fixed docstring for load_defs entrypoint, thanks @mattgiles!

1.10.13 (core) / 0.26.13 (libraries)

New

If an unselected asset check is executed during a run, the system will now warn instead of throwing a hard error.
When evaluating AutomationCondition.any_deps_match or AutomationCondition.all_dep_match with an allow / ignore specified, an error will no longer be produced if the provided asset selection references an asset key that does not exist.
Added the ability to restrict the list of ports that dagster dev is allowed to use to open subprocesses when running on Windows, by setting the DAGSTER_PORT_RANGE env var to a string of the form <start>=<end> - for example "20000-30000".
[dagster-aws] The S3 sensor's get_objects now returns an empty list if no new files can be found since the since_last_modified parameter. Thanks @bartcode!
[dagster-dbt] @dbt_assets and build_dbt_manifest_asset_selection now support a selector argument, allowing you to use yaml-based selectors.
[dagster-k8s] improved run monitoring when running with increased backoff limits. Thanks @adam-bloom!

Bugfixes

Fixed a bug with AutomationCondition.initial_evaluation which could cause it to return False for an asset that went from having a condition, to having no condition at all, back to having the original condition again.
Fixed a bug that would cause the AutomationCondition.any_deps_updated() condition to evaluate to False when evaluated on a self-dependency.
Fixed a bug in the quickstart_aws example. Thanks @Thenkei!
[ui] Fixed navigation between asset tabs by no longer preserving query parameters from one tab to the next.
[ui] Fixed an issue where the asset graph looked like it was still loading when it wasn't.

Documentation

Added Scala Spark / Dagster Pipes guide.

dg & Components (Preview)

[dg] Error message when an invalid configuration file is detected is now shorter and more clear.
[components] Descriptions and examples have been restored for core models such as ResolvedAssetSpec. description and examples arguments have been added to Resolver for documenting fields on non-pydantic model based Resolvable classes.

1.10.12 (core) / 0.26.12 (libraries)

New

[ui] Removed the By partition grouping view for recent events for assets that do not have a definition in the workspace.
[ui] The asset graph now displays asset health information when the new Observe UI feature flag is enabled.
[ui] A new feature flag allows you to customize the appearance of assets on the asset graph by enabling and disabling individual facets.
[ui] Fixed a bug that prevented filtering asset events by type.
[dagster-k8s] K8sPipeClient failures will now include the last 100 lines of the logs of the pod that failed, instead of the full log output.

Bugfixes

Fixed an issue which caused multi assets that were automatically broken apart in some contexts to remain separated even in cases where this was not necessary to maintain execution dependencies.
Fixed a bug that would cause multi-assets defined with can_subset=True to error when using dagster-pipes if not all outputs were emitted.
[ui] Fixed an issue where the asset graph looked like it was still loading when it wasn't.

Documentation

[docs] New integration pages for Polars and Patito.

dg & Components (Preview)

dg will now fail with an error message if it's version is below the minimum supported version for the version of dagster in your environment.
dg now checks for new versions and prompts the user to update. The check runs automatically at dg startup once per day.
dg will now emit a warning prompting the user to reinstall the package if it detects an entry point in project metadata that does not show up when running in dg list plugins.
dg list defs now collapses long system stacktraces #29507
Added dagster.multi_asset scaffolder
Added dagster.asset_check scaffolder
Fixed a bug where dg list defs would crash if anything was written to stdout while loading a project's definitions.
The default location for the dg user config file on Unix has been moved from ~/.dg.toml to ~/.config/dg.toml. ~/.config can be overridden by setting $XDG_CONFIG_HOME.
Cache deserialization errors are now ignored. Previously, when the dg contents of the cache were in an outdated format, dg could crash. Now it will just rebuild the cache.
The Components ETL Pipeline Tutorial now supports users of both pip and uv.
The dg CLI will now emit a warning if you are using "active" mode for your project python environment, there is a virtual environment at <project_root>/.venv, and the activated venv is not <project_root>/.venv
A new dg setting cli.suppress_warnings is available. This takes a list of warning types to suppress.
Added a warning message to inform users they need to install their project package when skipping automatic environment setup.
Changed configuration of project Python environments. The tool.dg.project.python_environment previously accepted a string, "active" or "persistent_uv". Now it accepts a table with one of two keys:
- {active = true}: equivalent of previous "active"
- {uv_managed = true}: equivalent of previous "persistent_uv"
Changed the default python environment for newly scaffolded projects to tool.dg.project.python_environment to {active = true}. This means by default, no virtual environment or uv.lock will be created when scaffolding a new project (via dg init or dg scaffold project). You can pass --python-environment uv_managed for the old behavior.
Removed the --skip-venv flag on dg scaffold project and dg init.
The dagster_components package has been merged into dagster and use of the dagster-components package has been deprecated. dagster-components will remain as a stub package for the next few weeks, but code should be updated to import from dagster.components instead of dagster_components.
[dagster-dbt] the dagster-dbt project prepare-and-package cli now supports --components for handling DbtProjectComponent
[dagster-dbt] DbtProjectComponent has been reworked, changing both the python api and the yaml schema. dbt has been replaced with project with a slightly different schema, and asset_attributes with translation .

1.10.11 (core) / 0.26.11 (libraries)

New

[ui] Runs launched from the Dagster UI get a dagster/from_ui = true tag, making it easy to filter for them.
[ui] The run page now shows the number of log levels selected as well as the number of log levels available.
Added AirflowFilter API for use with dagster-airlift, allows you to filter down the set of dags retrieved up front for perf improvements.

Bugfixes

[ui] Fixed a bug that prevented filtering asset events by type.
Fixed a bug that would cause multi-assets defined with can_subset=True to error when using dagster-pipes if not all outputs were emitted.
[dagster-dbt] the state_path argument to DbtCliResource now resolves relative to the project directory as documented.
[dagster-k8s] Made reliability improvements to PipesK8sClient log streaming when transient networking errors occur. The default behavior of the PipesK8sClient is now to reconnect to the stream of logs every hour (this value can be overridden by setting the DAGSTER_PIPES_K8S_CONSUME_POD_LOGS_REQUEST_TIMEOUT environment variable) and to retry up to 5 times if an error occurs while streaming logs from the launched Kubernetes pod (this value can be overridden by setting the DAGSTER_PIPES_K8S_CONSUME_POD_LOGS_RETRIES environment variable.)
[dagster-dbt] Fixed a bug where dbt jobs would fail due to unparseable logs causing errors in DbtCliInvocation.stream_raw_events. (Thanks @ross-whatnot!)

Dagster Plus

[ui] It is now possible to roll back a code location to a version that had previously been in an errored state.

dg & Components (Preview)

The dg CLI will now emit a warning if you are using "active" mode for your project python environment, there is a virtual environment at <project_root>/.venv, and the activated venv is not <project_root>/.venv
A new dg setting cli.suppress_warnings is now available. This takes a list of warning types to suppress.
Changed configuration of project Python environments. The tool.dg.project.python_environment previously accepted a string, "active" or "persistent_uv". Now it accepts a table with one of three keys: - {active = true}: equivalent of previous "active" - {uv_managed = true}: equivalent of previous "persistent_uv"
Changed the default python environment for newly scaffolded projects to tool.dg.project.python_environment to {active = true}. This means by default, no virtual environment or uv.lock will be created when scaffolding a new project (via dg init or dg scaffold project). You can pass --python-environment uv_managed for the old behavior.
Removed the --skip-venv flag on dg scaffold project and dg init.
Fixed a bug where new projects scaffolded with dg scaffold project were lacking dagster as a dependency.
The "Creating a library of components" guide has been replaced by a new and more general "Creating a dg plugin" guide.
The arguments/options of the dg init command have changed. You may pass . as an argument to initialize a project/workspace in the CWD. See dg init --help for more details.
The dagster-components package (which was converted to a stub package in the last release) is no longer being published. All dagster-components functionality is now part of dagster.
Projects should now expose custom component types under the dagster_dg.plugin entry point group instead of dagster_dg.library. dagster_dg.library support is being kept for now for backcompatibility, but will be dropped in a few weeks.
Fixed formatting of line added to project/lib/__init__.py when scaffolding a component type.
The dg env list command is now dg list env
The dg plus env pull command is now dg plus pull env.
The dg list component-type command has been removed. There is a new dg list plugins with output that is a superset of dg list component-type.
The dg user config file on Unix is now looked for at ~/.dg.toml instead of ~/dg.toml.
[dagster-dbt] DbtProjectComponent has been reworked, changing both the python api and the yaml schema. dbt has been replaced with project with a slightly different schema, and asset_attributes with translation.

1.10.10 (core) / 0.26.10 (libraries)

New

A new blocking parameter has been added to build_last_update_freshness_checks and build_time_partition_freshness_checks.
The default byte size limit for gRPC requests and responses is now 100MB instead of 50MB. This value can be adjusted by setting the DAGSTER_GRPC_MAX_RX_BYTES and DAGSTER_GRPC_MAX_SEND_BYTES environment variables on the gRPC client and server processes.
Added a new Definitions.map_asset_specs method, which allows for the transformation of properties on any AssetSpec or AssetsDefinition objects in the Definitions object which match a given asset selection.
Definitions.validate_loadable and dagster definitions validate will now raise an error on assets with invalid partition mappings, like a TimeWindowPartitionMapping between two time-based partitions definitions with different timezones. Previously, these invalid partition mappings would not raise an error until they were used to launch a run.
[dagster-k8s] Reliability improvements to PipesK8sClient log streaming when transient networking errors occur. The default behavior of the PipesK8sClient is now to reconnect to the stream of logs every 3600 seconds (this value can be overridden by setting the DAGSTER_PIPES_K8S_CONSUME_POD_LOGS_REQUEST_TIMEOUT environment variable) and to retry up to 5 times if an error occurs while streaming logs from the launched Kubernetes pod (this value can be overridden by setting the DAGSTER_PIPES_K8S_CONSUME_POD_LOGS_RETRIES environment variable.)

Bugfixes

Fixed an issue where run monitoring sometimes didn't fail runs that were stuck in a NOT_STARTED status instead of a STARTING status.
Fixed an issue where Dagster run metrics produced large amounts of error lines when running in containers without a CPU limit set on the container.
Fixed an issue where using partial resources in Pydantic >= 2.5.0 could result in an unexpected keyword argument TypeError. (Thanks @HynekBlaha!)
Fixed an issue with new AutomationCondition.executed_with_tags() that would cause the tag_keys argument to not be respected. Updated the display name of AutomationCondition.executed_with_tags() to contain the relevant tag_keys and tag_values.
[ui] Fixed a bug preventing filtering on the asset events page.
[ui] Fix custom time datepicker filter selection for users with custom Dagster timezone settings.
[dagster-fivetran] Fixed a bug causing the Fivetran integration to fetch only 100 connectors per destination.
[dagster-fivetran] Paused connectors no longer raise an exception in FivetranWorkspace.sync_and_poll(...). Instead, they skip and a warning message is logged.
[dagster-fivetran] Fixed an issue where new runs of code locations using Fivetran assets would sometimes raise a "Failure condition: No metadata found for CacheableAssetsDefinition" error if the run was started immediately after a new version of the code location was deployed.
[dagster-cloud] Reliability improvements to the dagster-cloud job launch command when launching runs targeting large numbers of assets or asset checks.

Dagster Plus

Fixed an issue with the identification of the base repository URL the DAGSTER_CLOUD_GIT_URL. The raw URL is now exposed as DAGSTER_CLOUD_RAW_GIT_URL.

dg & Components (Preview)

The dagster_components package has been merged into dagster. All symbols exported from dagster_components are now exported by dagster.
Projects should now expose custom component types under the dagster_dg.plugin entry point group instead of dagster_dg.library. dagster_dg.library support is being kept for now for backcompatibility, but will be dropped in a few weeks.
Component.get_schema has been renamed to Component.get_model_cls. Override that instead to customize the frontend of your component. Component.get_schema will continue to work for the time being but will be removed at some point in the future.
Add support for dg.toml files. dg settings in pyproject.toml are set under tool.dg, but in dg.toml they are set at the top level. A dg.toml may be used in place of pyproject.toml at either the project or workspace level.
dg-scaffolded workspaces now include a dg.toml instead of pyproject.toml file.
Projects scaffolded using dg init or dg scaffold project now follow modern Python packaging conventions, placing the root module in a top-level src directory and use hatchling as build backend rather than setuptools.
Scaffolding a component type defaults to inheriting from dagster.components.Model instead of getting decorated with @dataclasses.dataclass.
Assets scaffolded using dg scaffold dagster.asset will no longer be commented out.
The dg list component-type command has been removed. There is a new dg list plugins with output that is a superset of dg list component-type.
dg list defs now includes infomation about asset checks.
Fix formatting of line added to project/lib/__init__.py when scaffolding a component type.
Fixed bug where schedules were displayed in the sensors section of dg list defs.
Fixed a bug where dg would crash when working with Python packages with an src-based layout.

1.10.9 (core) / 0.26.9 (libraries)

Bugfixes

[ui] Fix custom time datepicker filter selection for users with custom Dagster timezone settings.

dg & Components (Preview)

Add support for dg.toml files. dg settings in pyproject.toml are set under tool.dg, but in dg.toml they are set at the top level. A dg.toml may be used in place of pyproject.toml at either the project or workspace level.
dg-scaffolded workspaces now include a dg.toml instead of pyproject.toml file.
dg-scaffolded projects now place the root package in an src/ directory and use hatchling as the build backend rather than setuptools.
Fixed a bug where dg would crash when working with Python packages with an src-based layout.
dg check yaml now properly validates component files in nested subdirectories of the defs/ folder.

1.10.8 (core) / 0.26.8 (libraries)

New

[ui] The Dagster UI now allows you to specify extra tags when re-executing runs from failure from the runs feed re-execute dialog, or by holding shift when clicking Re-execute menu items throughout the app.
[ui] Performance improvements for loading the partitions page for multi-partitioned assets.
[ui] Fix link in toast messages that appear when launching backfills.
[ui] Dagster's UI now allows you to copy run tags as a YAML block from the Tags and Configuration modals.
[ui] The Dagster Run UI now allows you to view the execution plan of a queued run.

Bugfixes

The AutomationCondition.initial_evaluation condition has been updated to become true for all partitions of an asset whenever the PartitionsDefinition of that asset changes, rather than whenever the structure of the condition changes.
[dagster-fivetran] Fixed an issue where new runs of code locations using fivetran assets would sometimes raise a "Failure condition: No metadata found for CacheableAssetsDefinition" error if the run was started immediately after a new version of the code location was deployed.
[dagster-fivetran] Fixed an issue where including multiple sets of assets from build_fivetran_assets_definitions in a single Definitions object would result in "duplicate node" errors when launching a run.
[ui] Fixed line charts for colorblind themes.
[ui] Fixed an issue with querystring parsing that can arise when selecting a large number of items in the selection syntax input.
[ui] Fixed tag filtering on automations list.
[ui] Fixed hover state on focused inputs.
[ui] Fixed an issue with the Run step selection input autocomplete where it would suggest key:"*substring*" instead of name:"*substring*".
[ui] Fixed the "View run" link shown when launching runs

Documentation

Fix a bug in example code for pyspark.

dg & Components (Preview)

Added the ability to scaffold Python components.
The DefsModuleComponent has been renamed to DefsFolderComponent.
When scaffolding a component, the command is now dg scaffold my_project.ComponentType instead of dg scaffold component my_project.ComponentType.
[dagster-dg] dagster list defs will now read environment variables from a local .env file if present when constructing the definitions.
dagster-components has been merged into dagster and use of the dagster-components package has been deprecated. dagster-components will remain as a stub package for the next few weeks, but code should be updated to import from dagster.components instead of dagster_components.
The DbtProjectComponent has been relocated to the dagster-dbt package, importable as dagster_dbt.DbtProjectComponent.
The SlingReplicationCollectionComponent has been relocated to the dagster-sling package, importable as dagster_sling.SlingReplicationCollectionComponent.

1.10.7 (core) / 0.26.7 (libraries)

New

Applying changes from sensor test results now also applies changes from dynamic partition requests.
When merging assets from multiple code locations, autogenerated specs are now prioritized lower than customized external asset specs.
[ui] Allowed using command-click to view a run from the toast message that appears when starting a materialization of an asset.
[ui] Asset graph can now zoom out a lot more.
[ui] Added a kind tag for dbt Cloud.
[dagster-dlt] Added backfill policy to dlt_assets, defaulting to single-run. (Thanks @neuromantik33!)

Bugfixes

Updated AutomationCondition.initial_evaluation condition to become true for all partitions of an asset whenever the PartitionsDefinition of that asset changes, rather than whenever the structure of the condition changes.
Fixed a bug with several integrations that caused data fetched from external APIs not to be properly cached during code server initialization, leading to unnecessary API calls in run and step worker processes. This affected dagster-airbyte, dagster-dlift, dagster-dbt, dagster-fivetran, dagster-looker, dagster-powerbi, dagster-sigma, and dagster-tableau.
[ui] Fixed an issue with the Run step selection input autocomplete where it would suggest key:"*substring*" instead of name:"*substring*".
[ui] Fixed the "View run" link shown when launching runs.
[ui] Fixed an issue where updating a catalog view caused an infinite loading state.
Fixed an issue which could cause asset check evaluations emitted from the body of the op to not impact the check status of an asset in the UI.
Fixed an issue that could cause an asset backfill created by re-executing another backfill from the point of failure to error on the first tick in rare cases.
Fixed an issue that could cause automation condition evaluations to fail to render in the UI in rare cases.
[ui] Fixed a regression in the "Cancel Backfill" option for job backfills that have finished queuing runs.
[ui] Fixed overflow of long runs feed table on backfill page.
[dagster-dbt] Replaced @validator with @field_validator in dagster_dbt/core/resource.py to prevent Pydantic deprecation warnings. (Thanks @tintamarre!)

Documentation

Updated the "Asset versioning and caching" guide to reflect the current Dagster UI and "Unsynced" labels.
Removed a few repeated lines in documentation on customizing automation conditions. (Thanks @zero-stroke!)
Fixed example in TableRecord documentation to use the new input format.

Configuration

[dagster-gcp] Updated Dataproc configuration to the latest version. If necessary, consider pinning your dagster-gcp version while you migrate config. Please see the full list of changed fields: https://gist.github.com/deepyaman/b4d562e04fe571e40037a344b7a9937d
[dagster-aws][dagster-spark] Updated Spark configuration to the latest version (3.5.5). If necessary, consider pinning your dagster-aws and/or dagster-spark version while you migrate config. Please see the full list of changed fields: https://gist.github.com/deepyaman/f358f5a70fea28d5f164aca8da3dee04

Dagster Plus

[ui] Fixed filtering for multiple tags on list view pages, including Automations.
[ui] Fixed an issue where the urls generated by catalog filtering would remove all filters if loaded directly.
[ui] Added a warning on the sign-in page indicating that the sign-in and signup flows will be changing soon.
[ui] Require confirmation when rolling back a code location to a previous version.

dg & Components (Preview)

Virtual environment detection settings for projects have changed. Previously, the global settings use_dg_managed_environment and require_local_venv controlled the environment used when launching project subprocesses. This is now configured at the project level. The tool.dg.project.python_environment setting takes a value of either persistent_uv or active. persistent_uv will be used by default in new scaffolded projects and uses a uv-managed .venv in the project root. active is the default if no tool.dg.project.python_environment is set, and just uses the active python environment and opts out of dg management of the environment.
A new base class, Resolvable, has been added. This can be used to simplify the process of defining a yaml schema for your components. Instead of manually defining a manual ResolvedFrom[...] and ResolvableModel, the framework will automatically derive the model schema for you based off of the annotations of your class.
Python files with Pythonic Components (i.e. defined with @component) can now contain relative imports.
The dg init command now accepts optional --workspace-name and --project-name options to allow scaffolding an initial workspace and project via CLI options instead of prompts.
Added a new dagster_components.dagster.DefsFolderComponent that can be used at any level of your defs/ folder to apply asset attributes to the definitions at or below that level. This was previously named dagster_components.dagster.DefsModuleComponent.

1.10.6 (core) / 0.26.6 (libraries)

New

Added a new AutomationCondition.executed_with_tags() condition that makes it possible to filter for updates from runs with particular tags.
AssetCheckEvaluation can now be yielded from Dagster ops to log an evaluation of an asset check outside of an asset context.
Added the kinds argument to dagster.AssetOut, allowing kinds to be specified in @multi_asset.
[dagster-dbt] AssetCheckEvaluations are now yielded from ops leveraging DbtCliResource.cli(...) when asset checks are included in the dbt asset lineage.
[dagster-sling] The SlingResource.replicate() method now takes an option stream parameter, which allows events to be streamed as the command executes, instead of waiting until it completes (thanks, @natpatchara-w!).
[dagster-graphql] The DagsterGraphQLClient now supports an auth keyword argument, which is passed to the underlying RequestsHTTPTransport constructor.
[ui] The asset selection syntax input now allows slashes "/" in the freeform search.
[ui] The backfill pages now show summary information on all tabs for easier backfill monitoring.

Bugfixes

Fixed issue with AutomationCondition.newly_requested() which could cause it to fail when nested within AutomationCondition.any_deps_match() or AutomationCondition.all_deps_match().
Fixed a bug with AutomationCondition.replace() that would cause it to not effect AutomationCondition.since() conditions.
Fixed a bug with several integrations that caused data fetched from external APIs not to be properly cached during code server initialization, leading to unnecessary API calls in run and step worker processes. This affected: dagster-airbyte, dagster-dlift, dagster-dbt, dagster-fivetran, dagster-looker, dagster-powerbi, dagster-sigma, and dagster-tableau.
Fixed a bug that could cause invalid circular dependency errors when using asset checks with additional dependencies.
[dagster-fivetran] Loading assets for a Fivetran workspace containing incomplete and broken connectors now no longer raises an exception.
[ui] Fixed the colorblind (no red/green) theme behavior when in dark mode.
[ui] The Asset > Partitions page no longer displays an error in some cases when creating dynamic partitions.
[ui] The Launch and Report Events buttons no longer error if you click it immediately after creating a new dynamic partition.

dg & Components (Preview)

__pycache__ files are no longer included in the output of dg list component. (Thanks @stevenayers!)
When resolving the deps of an AssetSpec from yaml, multi-part asset keys are now correctly parsed. (Thanks @stevenayers!)
The entrypoint group for dg projects has been renamed from dagster.components to dagster_dg.library.
dg check yaml is now run by default before dg dev and dg check defs.

1.10.5 (core) / 0.26.5 (libraries)

New

async def yield_for_execution is now supported on ConfigurableResource. An event_loop argument has been added to context builders to support direct execution.
dagster dev deduplicates stacktraces when code locations fail to load, and will by default truncate them to highlight only user code frames.
Improved error message experience for resources expecting an env var which was not provided.
[ui] An updated asset selection syntax is now available in the asset graph, insights, and alerts. The new syntax allows combining logical operators, lineage operators, and attribute filters.
[dagster-polars] The minimal compatible deltalake version has been bumped to 0.25.0; the PolarsDeltaIOManager is now using the rust engine for writing DeltaLake tables by default.

Bugfixes

Fixed a bug with AutomationCondition.replace() that would cause it to not effect AutomationCondition.since() conditions.
Fixed a bug that could cause invalid circular dependency errors when using asset checks with additional dependencies.
Fixed an issue in Dagster OSS where failed runs of multiple partitions didn't update those partitions as failed in the Dagster UI or trigger failure automation conditions.
Fixed an issue where dagster dev would fail to load code that took more than 45 seconds to import unless the --use-legacy-code-server-behavior flag was used.
[dagster-airbyte] Fixed an issue that caused the group name of assets created using build_airbyte_assets_definitions function to error when attempting to modify the default group name.
[dagster-fivetran] Fixed an issue that caused the group name of assets created using build_fivetran_assets_definitions function to error when attempting to modify the default group name.

1.10.4 (core) / 0.26.4 (libraries)

New

[ui] The asset overview tab for a partitioned asset now shows metadata and schema of the most recent materialization, not today's partition.
[ui] In run logs, asset materialization and observation events now show the output partition as well as the asset key.
[ui] The backfills view has moved to Runs > Backfills and is no longer available on the Overview tab.
[ui] Pool event information from a run now links to the pool configuration page.
Added support for passing tags to the created RunRequest when using build_sensor_for_freshness_checks().
[dagster-gcp] The PickledObjectGCSIOManager now replaces the underlying blob when the same asset is materialized multiple times, instead of deleting and then re-uploading the blob.
[docs] Added docs covering run-scoped op concurrency.
[dagster-fivetran] Fivetran connectors fetched in Dagster can now be filtered and selected using the ConnectorSelectorFn.

Bugfixes

Fixed a bug where if a run was deleted while the re-execution system was determining whether the run should be retried an error was raised. Now, if a run is deleted while the re-execution system is determining whether the run should be retried, the run will not be retried.
[ui] Fixed an issue where assets with automation conditions wouldn't show the jobs/sensors/schedules targeting them.
[ui] Steps properly transition to failed in the Run gantt chart when resource initialization fails.

1.10.3 (core) / 0.26.3 (libraries)

New

Added links from pool info in run event logs to the respective pool configuration pages.
Added queued run information on the pool info page, even if the pool granularity is set to run.
[ui] Added information about asset partitions that fail to materialize due to run cancellations to the asset partition detail page.
[ui] Added two new themes for users with reduced sensitivity to red and green light.
[ui] Added Not Diamond icon for asset kinds tag. (Thanks @dragos-pop!)
[ui] Added Weaviate icon for asset kinds tag. (Thanks @jjyeo!)
[ui] Made Alerts page visible to users with Viewer roles.
[dagster-postgres] Removed the cap on PostgresEventLogStorage QueuePool by setting max_overflow to -1. (Thanks @axelwas!)

Bugfixes

Fixed a bug where a sensor emitting multiple RunRequests with the same run key within a single tick would cause two runs with the same key to be executed. Now, only the first run will be executed. (Thanks @Gw1p!)
Fixed a bug where run step selections were not affecting which pools limit a given run.
Fixed an issue where seeding the random number generator during code import or when initializing a resource could cause every step to write to the same stdout or stderr key.
[ui] Fixed an issue where certain jobs weren't showing the assets they targeted.
Asset backfills will now move into a CANCELED state instead of a FAILURE state when not every requested partition has been marked as materialized or failed by the backfill.
[dagster-dbt] Fixed a bug breaking packaged_project_dir since supporting profiles_dir in DbtProject.
Fixed an issue with DbIOManagers being unable to process subclasses of handled types.
[ui] Preserved asset selection filters when navigating folders in the asset catalog.
[ui] Corrected PostgreSQL SVG icon for asset kinds tag. (Thanks @dragos-pop!)
[ui] Fixed an issue that caused Markdown with code blocks in languages not supported for syntax highlighting to crash the page.
Fixed an issue where asset backfills included failed partitions in the in-progress list in logging output.

Documentation

Fixed broken image links in quickstart examples. (Thanks @stevenayers!)
[dagster-dbt] Made several fixes to the "Using dbt with Dagster" page. (Thanks @jjyeo!)
Fixed broken link in defining-assets.md. (Thanks @Exlll!)
Fixed link in CONTRIBUTING.md leading to a 404. (Thanks @Exlll!)
Fixed typo in managing-code-locations-with-definitions.md. (Thanks @kgeis!)
Fixed typo in asset-versioning-and-caching.md. (Thanks @petrusek!)

Dagster Plus

[ui] Enabled setting long-running job alerts in minutes instead of hours.
[dagster-insights] Fix links to branch deployments in the deployment list UI.
[dagster-insights] Adjusted the way batching runs from the create_snowflake_insights_asset_and_schedule sensor using the schedule_batch_size_hrs parameter works to yield a single partition range run instead of individual runs per partition.

1.10.2 (core) / 0.26.2 (libraries)

New

Turned on run-blocking for concurrency keys / pools by default. For op granularity, runs are dequeued if there exists at least one op that can execute once the run has started. For run granularity, runs are dequeued if all pools have available slots.
Performance improvements for backfills of large partition sets.
The prefix of temporary directories created when running a temporary Dagster instance (as with dagster dev) has been changed from tmp to .tmp_dagster_home_. (Thanks @chazmo03!)
Added sanitation checks on valid pool names.
[dagster-aws] Added sample Terraform modules for Dagster deployment on AWS ECS.
[dagster-dbt] Added pool support for dbt integrations.
[dagster-dlt] Added pool support for dlt integrations.
[dagster-sling] Added pool support for sling integrations.
[dagster-aws] Added AWS RDSResource. (Thanks @shimon-cherrypick!)
[dagster-mysql] Added MySQLResource. (Thanks @shimon-cherrypick!)
[dagster-azure] Added Azure Blob Storage Resource. (Thanks @shimon-cherrypick!)
[ui] Expanding/collapsing groups in the Asset Graph will no longer reset your zoom.
[ui] Changed the queue criteria dialog to reference pools instead of concurrency keys.
[ui] The Instance Backfills page is being removed in the upcoming March 6 release in favor of the new Runs > Backfills view.
[ui] When re-executing a run that is part of a backfill that has completed, Dagster UI notifies you that the re-execution will not update the backfill stats.
[ui] The backfill actions menu now includes "Re-execute" and "Re-execute from failure", which create new backfills targeting the same partitions, and the partitions which failed to materialize, respectively.
[ui] The latest asset check evaluation is shown in the Evaluation History tab, and AssetCheckResult descriptions are rendered in the table making it easier to publish a summary of check evaluation.
[ui] The Materialize button appears more quickly on asset pages in the Dagster UI.
[ui] The queue details modal for a run no longer closes as new runs arrive and links to the correct concurrency page.

Bugfixes

Fixed an issue where if two separate code locations defined the same asset key with an automation condition, duplicate runs could be created by Declarative Automation.
Fixed the psycopg2.errors.UndefinedColumn database error when trying to set a concurrency key without first having run dagster instance migrate.
Fixed an issue where Declarative Automation sensors in code locations that included source assets referencing assets with automation conditions in other code locations would sometimes cause duplicate runs to be created.
Fixed a bug in the enforcement of global op concurrency limits.
Fixed an issue where when using dagster dev, some changes were not reflected in the UI after pressing the "Reload Definitions" button.
Fixed the issue where a resource initialization error within a sensor definition test incorrectly recommended using build_schedule_context instead of build_sensor_context.
Fixed migration issue where dagster instance migrate was failing for instances with non-empty concurrency limits tables.
[ui] Fixed an issue where a "Message: Cannot return null for non-nullable field PartitionKeys.partitionKeys." error was raised in the launchpad for jobs with unpartitioned assets.
[ui] Fixed concurrency link escaping in the View queue criteria dialog.
[ui] Fixed an issue where the deployment switcher can become permanently "unset" when navigating from Org Settings back to a deployment.
[ui] Fixed an issue with the traversal operators on the asset graph (asset++) not including assets connected to the target asset by paths of varying distance.

Dagster Plus

A setting is available in agent configuration direct_snapshot_uploads (directSnapshotUploads in helm) which opts in to a new more efficient scheme for how definitions are handled during code location updates.
Introduced new test utilities event_log and dagster_event in dagster-cloud-test-infra to facilitate the creation of test data with sensible defaults for EventLogEntry and DagsterEvent objects.
[bigquery-insights][bugfix] Support querying for insights from the configured execution_project if defined.
[bigquery-insights][bugfix] When execution_project is defined in the dbt profile, fall back to fetching the dataset from the dbt profile's project if the dataset cannot be found in the execution_project.

1.10.1 (core) / 0.26.1 (libraries)

Bugfixes

Fixed an issue where runs containing pool-assigned ops without limits set got stuck in the run queue.
Fixed an issue where a "Message: Cannot return null for non-nullable field PartitionKeys.partitionKeys." error was raised in the launchpad for jobs with unpartitioned assets.
[ui] Updated "Queue criteria" modal to reference and link to pool concurrency settings pages.
[ui] The "Queue criteria" modal for a run no longer closes as new runs arrive.

1.10.0 (core) / 0.26.0 (libraries)

New

Added a new AutomationCondition.data_version_changed() condition.
[dagster-msteams] Added support for sending messages to PowerAutomate flows using AdaptiveCard formatting.
dagster definitions validate is now less verbose, primarily highlighting load errors.
[ui] Made defunct code locations removable when editing environment variables.
[ui] Added a warning icon to the Agents item in Deployment settings, indicating when there are no active agents.
[dagster-tableau] Changed logic to show embedded data sources in case published data sources are not present. Also, pulled more metadata from Tableau. (Thanks @VenkyRules!)
Added new decorators to reflect our new API lifecycle: @preview, @beta and @superseded. Also added new annotations and warnings to match these new decorators.

Bugfixes

[ui] Fixed persistence of the group-by setting in the run timeline view.
[ui] Fixed timestamped links to asset pages from asset check evaluations in run logs.
[ui] Fixed excessive rendering and querying on the Concurrency configuration page.
Fixed the step stats calculations for steps that fail and request a retry before the step starts. This happened if a failure occurred in the step worker before the compute function began execution. This should help with sporadic hanging of step retries.
Fixed an issue where the Concurrency UI was broken for keys with slashes.
Fixed an issue with emitting AssetResult with ops or multi-assets that are triggered multiple times in the same run.
[dagster-dbt] Fixed a bug introduced in dagster-dbt 0.25.7 that would cause execution to fail when using the @dbt_assets decorator with an io_manager_key specified.
[dagster-dbt] Refactored UnitTestDefinition instantiation to address failure to initialize dbt models with unit tests. (Thanks @kang8!)
Fixed issue where dagster instance migrate was failing for instances with tables having non-empty concurrency limits.
Fixed an issue where Declarative Automation sensors in code locations that included source assets referencing assets with automation conditions in other code locations would sometimes cause duplicate runs to be created.
Turned on run blocking for concurrency keys/pools by default. For op granularity, runs are dequeued if there exists at least one op that can execute once the run has started. For run granularity, runs are dequeued if all pools have available slots.
[dagster-dbt] Added pool support.
[dagster-dlt] Added pool support.
[dagster-sling] Added pool support.

Documentation

Corrected docs on managing concurrency.
Fixed a Markdown link to "assets metadata." (Thanks @rchrand!)
Fixed a pip install command for Zsh. (Thanks @aimeecodes!)

Breaking Changes

The include_sources param on all AssetSelection APIs has been renamed to include_external_assets.
Disallowed invalid characters (i.e. anything other than letters, numbers, dashes, and underscores) in pool names.
Changed the default run coordinator to be the queued run coordinator. This requires the Dagster daemon to be running for runs to be launched. To restore the previous behavior, you can add the following configuration block to your dagster.yaml:
```
run_coordinator:
  module: dagster.core.run_coordinator.sync_in_memory_run_coordinator
  class: SyncInMemoryRunCoordinator
```

Deprecations

[dagster-sdf] Moved the dagster-sdf library to the community-supported repo.
[dagster-blueprints] Removed the dagster-blueprints package. We are actively developing a project, currently named Components, that has similar goals to Blueprints of increasing the accessibility of Dagster.
Removed the @experimental decorator in favor of the @preview and @beta decorators. Also removed annotations and warnings related to the @experimental decorator.

Dagster Plus

Shipped a range of improvements to alerts in Dagster+, including more granular targeting, streamlined UIs, and more helpful content. Stay tuned for some final changes and a full announcement in the coming weeks!

1.9.13 (core) / 0.25.13 (libraries)

Dagster Plus

Fixed a bug where runs using global op concurrency would raise an exception when claiming a concurrency slot.

1.9.12 (core) / 0.25.12 (libraries)

New

Adds a top-level argument pool to asset/op definitions to replace the use of op tags to specify concurrency conditions.
The dagster definitions validate command now loads locations in-process by default, which speeds up runtime.
All published dagster libraries now include a py.typed file, which means their type annotations will be used by static analyzers. Previously a few libraries were missing this file.
Adds concurrency pool information in the UI for asset / op definitions that use concurrency pools.
Optional data migration to improve performance of the Runs page. Run dagster instance migrate to run the data migration. The migration will update serialized backfill objects in the database with an end timestamp attribute computed by querying the runs launched by that backfill to determine when the last run completed.
Added the ability to distinguish between explicitly set concurrency pool limits and default-set pool limits. Requires a schema migration using dagster instance migrate.
Moves run queue configuration from its standalone deployment setting into the concurrency deployment setting, along with new settings for concurrency pools.
Enabled run granularity concurrency enforcement of concurrency pool limits.
[dagster-dbt] Specifying a dbt profiles directory and profile is now supported in DbtProject.
[dagster-dlt] DagsterDltTranslator.get_* methods have been superseded in favor of DagsterDltTranslator.get_asset_spec.
[dagster-gcp] Added PipesDataprocJobClient, a Pipes client for running workloads on GCP Dataproc in Job mode.
[dagster-looker] DagsterLookerLkmlTranslator.get_* methods have been superseded in favor of DagsterLookerLkmlTranslator.get_asset_spec.
[dagster-pipes] Dagster Pipes now support passing messages and Dagster context via Google Cloud Storage.
[ui] Created a standalone view for concurrency pools under the Deployment tab.
[ui] When launching partitioned assets in the launchpad from the global graph, Dagster will now warn you if you have not made a partition selection.
[ui] When viewing Runs, allow freeform search for filtering to view runs launched by schedules and sensors.
[ui] Remove misleading run status dot from the asset events list.
[ui] Introduce a stepped workflow for creating new Alerts.

Bugfixes

Fixed an issue where querying for Asset Materialization events from multi-partition runs would assign incorrect partition keys to the events.
Fixed an issue where partition keys could be dropped when converting a list of partition keys for a MultiPartitionsDefinition to a PartitionSubset.
Fixed an issue where the "Reload definitions" button didn't work when using dagster dev on Windows, starting in the 1.9.10 release.
Fixed an issue where dagster could not be imported alongside some other libraries using gRPC with an 'api.proto' file.
[ui] Fixed an issue where non-None default config fields weren't being displayed in the Launchpad view.
[ui] Fixed an issue with the search bar on the Asset partitions page incorrectly filtering partitions when combined with a status filter.
[ui] Fixed Asset page header display of long key values.
[ui] Fixed Slack tag in alert creation review step for orgs that have Slack workspaces connected.
[dagster-dbt] Fixed a bug introduced in dagster-dbt 0.25.7 which would cause execution to fail when using the @dbt_assets decorator with an io_manager_key specified.
[dagster-databricks] Fixed an issue with Dagster Pipes log capturing when running on Databricks.

Documentation

Fixed a mistake in the docs concerning configuring asset concurrency tags in Dagster+.
Added a tutorial for using GCP Dataproc with Dagster Pipes.

Dagster Plus

Relaxed pins on the 'opentelemetry-api' dependency in the 'dagster-cloud' package to >=1.27.0 to allow using dagster-cloud with protobuf versions 3 and 4.

1.9.11 (core) / 0.25.11 (libraries)

Bugfixes

Fixed an issue where running dagster dev would fail on Windows machines.
Fixed an issue where partially resolved config with default values were not able to be overridden at runtime.
Fixed an issue where default config values at the top level were not propagated to nested config values.

1.9.10 (core) / 0.25.10 (libraries)

New

Added a new .replace() method to AutomationCondition, which allows sub-conditions to be modified in-place.
Added new .allow() and .ignore() methods to the boolean AutomationCondition operators, which allow asset selections to be propagated to sub-conditions such as AutomationCondition.any_deps_match() and AutomationCondition.all_deps_match().
When using the DAGSTER_REDACT_USER_CODE_ERRORS environment variable to mask user code errors, the unmasked log lines are now written using a dagster.masked Python logger instead of being written to stderr, allowing the format of those log lines to be customized.
Added a get_partition_key() helper method that can be used on hourly/daily/weekly/monthly partitioned assets to get the partition key for any given partition definition. (Thanks @Gw1p!)
[dagster-aws] Added a task_definition_prefix argument to EcsRunLauncher, allowing the name of the task definition families for launched runs to be customized. Previously, the task definition families always started with run.
[dagster-aws] Added the PipesEMRContainersClient Dagster Pipes client for running and monitoring workloads on AWS EMR on EKS with Dagster.
[dagster-pipes] Added support for setting timestamp metadata (e.g. {"my_key": {"raw_value": 111, "type": "timestamp"}}).
[dagster-databricks, dagster-pipes] Databricks Pipes now support log forwarding when running on existing clusters. It can be enabled by setting PipesDbfsMessageReader(include_stdio_in_messages=True).
[dagster-polars] Added rust engine support when writing a Delta Lake table using native partitioning. (Thanks @Milias!)

Bugfixes

Fixed a bug where setting an AutomationCondition on an observable source asset could sometimes result in invalid backfills being launched.
Using AndAutomationCondition.without() no longer removes the condition's label.
[ui] Sensors targeting asset checks now list the asset checks when you click to view their targets.
[dagster-aws] Fixed the execution of EMR Serverless jobs using PipesEMRServerlessClient failing if a job is in the QUEUED state.
[dagster-pipes] Fixed Dagster Pipes log capturing when running on Databricks.
[dagster-snowflake] Fixed a bug where passing a non-base64-encoded private key to a SnowflakeResource resulted in an error.
[dagster-openai] Updated openai kinds tag to be "OpenAI" instead of "Open AI" in line with the OpenAI branding.

Documentation

[dagster-pipes] Added a tutorial for using Dagster Pipes with PySpark.

1.9.9 (core) / 0.25.9 (libraries)

New

Added a new function load_definitions_from_module, which can load all the assets, checks, schedules, sensors, and job objects within a module scope into a single Definitions object. Check out the documentation to learn more.
When using the DAGSTER_REDACT_USER_CODE_ERRORS environment variable to mask user code errors, the unmasked log lines are now written using a dagster.redacted_errors Python logger instead of being written to stderr, allowing the format of those log lines to be customized.
The croniter package is now vendored in dagster.
[ui] Corrected the minstral typo and updated the Mistral logo for asset kinds tag.
[ui] The relevant runs are now shown within the same dialog when viewing details of an automation evaluation.
[ui] Clicking to view runs with a specific status from the backfill overview now switches to the new backfill runs tab with your filters applied, instead of the global runs page.
[ui] In the run timeline, all run ids and timings are now shown in the hover popover.
[ui] Added a new tab on the Runs page that shows a filterable list of recent backfills.
[dagster-airlift] Added support for Python 3.7.
[dagster-aws] Added a task_definition_prefix argument to EcsRunLauncher, allowing the name of the task definition families for launched runs to be customized. Previously, the task definition families always started with run.
[dagster-azure] Moved azure fake implementations to its own submodule, paving the way for fake implementations to not be imported by default. (Thanks @futurewasfree!)
[dagster-dlt] The dagster-dlt library is added. It replaces the dlt module of dagster-embedded-elt.
[dagster-sling] The dagster-sling library is added. It replaces the Sling module of dagster-embedded-elt.
[helm] Added support for sidecar containers for all Dagster pods, for versions of K8s after 1.29 (Native Sidecars). (Thanks @hom3r!)

Bugfixes

Fixed an issue where the tick timeline wouldn't load for an automation condition sensor that emitted a backfill.
Fixed a bug with asset checks where additional_deps/additional_ins were not being threaded through properly in certain cases, and would result in errors at job creation.
Fixed a bug where the UI will hit an unexpected error when loading details for a run containing a step retry before the step has started.
Fixed a bug with load_assets_from_x functions where we began erroring when a spec and AssetsDefinition had the same key in a given module. We now only error in this case if include_specs=True.
Fixed a bug with load_assets_from_modules where AssetSpec objects were being given the key_prefix instead of the source_key_prefix. Going forward, when load_specs is set to True, only the source_key_prefix will affect AssetSpec objects.
Fixed a bug with the run queue criteria UI for branch deployments in Dagster Plus.
[ui] Fixed the "View evaluation" links from the "Automation condition" tag popover on Runs.
[dagster-aws] Fixed an issue with the EcsRunLauncher where it would sometimes create a new task definition revision for each run if the "task_role_arn" or "execution_role_arn" parameters were specified without the arn:aws:iam: prefix.
[dagster-aws] Fixed a bug with PipesEMRServerlessClient trying to get the dashboard URL for a run before it transitions to RUNNING state.
[dagster-dbt] Fixed an issue where group names set on partitioned dbt assets created using the @dbt_assets decorator would be ignored.
[dagster-azure] Fixed the default configuration for the show_url_only parameter on the AzureBlobComputeLogManager. (Thanks @ion-elgreco!)
[dagster-aws] Fixed an issue handling null networkConfiguration parameters for the ECS run launcher. (Thanks @markgrin!)

Documentation

Added example potential use cases for sensors. (Thanks @gianfrancodemarco!)
Updated the tutorial to match the outlined structure. (Thanks @vincent0426!)

Deprecations

[dagster-embedded-elt] the dagster-embedded-elt library is deprecated in favor of dagster-dlt and dagster-sling.

Dagster Plus

The Alert Policies page will now show a warning if a slack channel for a policy no longer exists.

1.9.8 (core) / 0.25.8 (libraries)

Bugfixes

Fixed a bug with load_assets_from_x functions where we began erroring when a spec and AssetsDefinition had the same key in a given module. We now only error in this case if include_specs=True.
[dagster-azure] Fixed a bug in 1.9.6 and 1.9.7 where the default behavior of the compute log manager switched from showing logs in the UI to showing a URL. You can toggle the show_url_only option to True to enable the URL showing behavior.
[dagster-dbt] Fixed an issue where group names set on partitioned dbt assets created using the @dbt_assets decorator would be ignored

1.9.7 (core) / 0.25.7 (libraries)

New

Added new function load_definitions_from_module, which can load all the assets, checks, schedules, sensors, and job objects within a module scope into a single Definitions object. Check out the documentation to learn more: https://docs.dagster.io/_apidocs/definitions#dagster.load_definitions_from_module.
Previously, asset backfills could only target selections of assets in which all assets had a BackfillPolicy, or none of them did. Mixed selections are now supported.
AssetSpecs may now contain a partitions_def. Different AssetSpecs passed to the same invocation of @multi_asset can now have different PartitionsDefinitions, as long as can_subset=True.
Added the option to use a thread pool to process backfills in parallel.
Exceptions that are raised when a schedule or sensor is writing to logs will now write an error message to stdout instead of failing the tick.
Added validation of title for asset backfills (not just for job backfills).
[ui] Design tweaks to the asset Automations tab.
[ui] Asset selection filtering is now case insensitive.
[ui] Add Teradata icon for kind tags.
[ui] When creating and editing alerts, when the form is in an invalid state, display the reason on the disabled buttons.
[ui] Add Automation history to asset checks.
[ui] Improve performance of Run page for very long-running runs.
[dagster-airbyte] The airbyte_assets decorator has been added. It can be used with the AirbyteCloudWorkspace resource and DagsterAirbyteTranslator translator to load Airbyte tables for a given connection as assets in Dagster. The build_airbyte_assets_definitions factory can be used to create assets for all the connections in your Airbyte workspace.
[dagster-airbyte] Airbyte Cloud assets can now be materialized using the AirbyteCloudWorkspace.sync_and_poll(…) method in the definition of a @airbyte_assets decorator.
[dagster-airlift] Airflow imports are now compatible with Airflow 1.
[dagster-aws] new ecs_executor which executes Dagster steps via AWS ECS tasks. This can be used in conjunction with ECSRunLauncher.
[dagster-dbt] dbt-core>=1.9 is now supported.
[dagster-dbt] Adds SQL syntax highlighting to raw sql code in dbt asset descriptions.
[dagster-looker] load_looker_asset_specs and build_looker_pdt_assets_definitions are updated to accept an instance of DagsterLookerApiTranslator or custom subclass.
[dagster-looker] Type hints in the signature of DagsterLookerApiTranslator.get_asset_spec have been updated - the parameter looker_structure is now of type LookerApiTranslatorStructureData instead of LookerStructureData. Custom Looker API translators should be updated.
[dagster-powerbi] load_powerbi_asset_specs has been updated to accept an instance of DagsterPowerBITranslator or custom subclass.
[dagster-powerbi] Type hints in the signature of DagsterPowerBITranslator.get_asset_spec have been updated - the parameter data is now of type PowerBITranslatorData instead of PowerBIContentData. Custom Power BI translators should be updated.
[dagster-sigma] load_sigma_asset_specs has been updated to accept an instance of DagsterSigmaTranslator or a custom subclass.
[dagster-sigma] Type hints in the signature of DagsterLookerApiTranslator.get_asset_spec have been updated - the parameter data is now of type Union[SigmaDatasetTranslatorData, SigmaWorkbookTranslatorData] instead of Union[SigmaDataset, SigmaWorkbook]. Custom Looker API translators should be updated.
[dagster-sigma] Added the option to filter to specific workbooks in addition to folders.
[dagster-sigma] Added the option to skip fetching lineage for workbooks in cases where users want to build this information themselves.
[dagster-tableau] load_tableau_asset_specs has been updated to accept an instance of DagsterTableauTranslator or custom subclass.
[dagster-tableau] Type hints in the signature of DagsterTableauTranslator.get_asset_spec have been updated - the parameter data is now of type TableauTranslatorData instead of TableauContentData. Custom Tableau translators should be updated.

Bugfixes

Fixed an issue where sensor and schedule tick logs would accumulate disk over time on Dagster code servers.
[ui] Fixed an issue where the app sometimes loads with styles missing.
[ui] Fix search string highlighting in global search results.
Fixed a race condition where immediately after adding a new asset to the graph, a freshness check sensor targeting that asset might raise an InvalidSubsetError in its first one.
[ui] Fixed a bug where backfills launched by Declarative Automation were not being shown in the table of launched runs.
The dagster-airlift package erroneously introduced a dependency on dagster. This has been rectified - dagster is only required for the dagster-airlift[core] submodule.

Deprecations

Deprecation of @multi_asset_sensor has been rolled back.

Dagster Plus

Introduce the Catalog Viewer role for Users and Teams.
Slack, MS Teams, and email alerts for run failures will list the steps that were successful or not executed.
[experimental] The option blobStorageSnapshotUploads has been added which enables a new process for how definition snapshots are uploaded to Dagster Cloud.
Fixed a catalog search issue where exact prefix matches are not prioritized in the search results.
Fixed a bug with Insights metric customization.

1.9.6 (core) / 0.25.6 (libraries)

New

Updated cronitor pin to allow versions >= 5.0.1 to enable use of DayOfWeek as 7. Cronitor 4.0.0 is still disallowed. (Thanks, @joshuataylor!)
Added flag checkDbReadyInitContainer to optionally disable db check initContainer.
Added job name filtering to increase the throughput for run status sensors that target jobs.
[ui] Added Google Drive icon for kind tags. (Thanks, @dragos-pop!)
[ui] Renamed the run lineage sidebar on the Run details page to Re-executions.
[ui] Sensors and schedules that appear in the Runs page are now clickable.
[ui] Runs targeting assets now show more of the assets in the Runs page.
[dagster-airbyte] The destination type for an Airbyte asset is now added as a kind tag for display in the UI.
[dagster-gcp] DataprocResource now receives an optional parameter labels to be attached to Dataproc clusters. (Thanks, @thiagoazcampos!)
[dagster-k8s] Added a checkDbReadyInitContainer flag to the Dagster Helm chart to allow disabling the default init container behavior. (Thanks, @easontm!)
[dagster-k8s] K8s pod logs are now logged when a pod fails. (Thanks, @apetryla!)
[dagster-sigma] Introduced build_materialize_workbook_assets_definition which can be used to build assets that run materialize schedules for a Sigma workbook.
[dagster-snowflake] SnowflakeResource and SnowflakeIOManager both accept additional_snowflake_connection_args config. This dictionary of arguments will be passed to the snowflake.connector.connect method. This config will be ignored if you are using the sqlalchemy connector.
[helm] Added the ability to set user-deployments labels on k8s deployments as well as pods.

Bugfixes

Assets with self dependencies and BackfillPolicy are now evaluated correctly during backfills. Self dependent assets no longer result in serial partition submissions or disregarded upstream dependencies.
Previously, the freshness check sensor would not re-evaluate freshness checks if an in-flight run was planning on evaluating that check. Now, the freshness check sensor will kick off an independent run of the check, even if there's already an in flight run, as long as the freshness check can potentially fail.
Previously, if the freshness check was in a failing state, the sensor would wait for a run to update the freshness check before re-evaluating. Now, if there's a materialization later than the last evaluation of the freshness check and no planned evaluation, we will re-evaluate the freshness check automatically.
[ui] Fixed run log streaming for runs with a large volume of logs.
[ui] Fixed a bug in the Backfill Preview where a loading spinner would spin forever if an asset had no valid partitions targeted by the backfill.
[dagster-aws] PipesCloudWatchMessageReader correctly identifies streams which are not ready yet and doesn't fail on ThrottlingException. (Thanks, @jenkoian!)
[dagster-fivetran] Column metadata can now be fetched for Fivetran assets using FivetranWorkspace.sync_and_poll(...).fetch_column_metadata().
[dagster-k8s] The k8s client now waits for the main container to be ready instead of only waiting for sidecar init containers. (Thanks, @OrenLederman!)

Documentation

Fixed a typo in the dlt_assets API docs. (Thanks, @zilto!)

1.9.5 (core) / 0.25.5 (libraries)

New

The automatic run retry daemon has been updated so that there is a single source of truth for if a run will be retried and if the retry has been launched. Tags are now added to run at failure time indicating if the run will be retried by the automatic retry system. Once the automatic retry has been launched, the run ID of the retry is added to the original run.
When canceling a backfill of a job, the backfill daemon will now cancel all runs launched by that backfill before marking the backfill as canceled.
Dagster execution info (tags such as dagster/run-id, dagster/code-location, dagster/user and Dagster Cloud environment variables) typically attached to external resources are now available under DagsterRun.dagster_execution_info.
SensorReturnTypesUnion is now exported for typing the output of sensor functions.
[dagster-dbt] dbt seeds now get a valid code version (Thanks @marijncv!).
Manual and automatic retries of runs launched by backfills that occur while the backfill is still in progress are now incorporated into the backfill's status.
Manual retries of runs launched by backfills are no longer considered part of the backfill if the backfill is complete when the retry is launched.
[dagster-fivetran] Fivetran assets can now be materialized using the FivetranWorkspace.sync_and_poll(…) method in the definition of a @fivetran_assets decorator.
[dagster-fivetran] load_fivetran_asset_specs has been updated to accept an instance of DagsterFivetranTranslator or custom subclass.
[dagster-fivetran] The fivetran_assets decorator was added. It can be used with the FivetranWorkspace resource and DagsterFivetranTranslator translator to load Fivetran tables for a given connector as assets in Dagster. The build_fivetran_assets_definitions factory can be used to create assets for all the connectors in your Fivetran workspace.
[dagster-aws] ECSPipesClient.run now waits up to 70 days for tasks completion (waiter parameters are configurable) (Thanks @jenkoian!)
[dagster-dbt] Update dagster-dbt scaffold template to be compatible with uv (Thanks @wingyplus!).
[dagster-airbyte] A load_airbyte_cloud_asset_specs function has been added. It can be used with the AirbyteCloudWorkspace resource and DagsterAirbyteTranslator translator to load your Airbyte Cloud connection streams as external assets in Dagster.
[ui] Add an icon for the icechunk kind.
[ui] Improved ui for manual sensor/schedule evaluation.

Bugfixes

Fixed database locking bug for the ConsolidatedSqliteEventLogStorage, which is mostly used for tests.
[dagster-aws] Fixed a bug in the ECSRunLauncher that prevented it from accepting a user-provided task definition when DAGSTER_CURRENT_IMAGE was not set in the code location.
[ui] Fixed an issue that would sometimes cause the asset graph to fail to render on initial load.
[ui] Fix global auto-materialize tick timeline when paginating.

1.9.4 (core) / 0.25.4 (libraries)

New

Global op concurrency is now enabled on the default SQLite storage. Deployments that have not been migrated since 1.6.0 may need to run dagster instance migrate to enable.
Introduced map_asset_specs to enable modifying AssetSpecs and AssetsDefinitions in bulk.
Introduced AssetSpec.replace_attributes and AssetSpec.merge_attributes to easily alter properties of an asset spec.
[ui] Add a "View logs" button to open tick logs in the sensor tick history table.
[ui] Add Spanner kind icon.
[ui] The asset catalog now supports filtering using the asset selection syntax.
[dagster-pipes, dagster-aws] PipesS3MessageReader now has a new parameter include_stdio_in_messages which enables log forwarding to Dagster via Pipes messages.
[dagster-pipes] Experimental: A new Dagster Pipes message type log_external_stream has been added. It can be used to forward external logs to Dagster via Pipes messages.
[dagster-powerbi] Opts in to using admin scan APIs to pull data from a Power BI instance. This can be disabled by passing load_powerbi_asset_specs(..., use_workspace_scan=False).
[dagster-sigma] Introduced an experimental dagster-sigma snapshot command, allowing Sigma workspaces to be captured to a file for faster subsequent loading.

Bugfixes

Fixed a bug that caused DagsterExecutionStepNotFoundError errors when trying to execute an asset check step of a run launched by a backfill.
Fixed an issue where invalid cron strings like "0 0 30 2 *" that represented invalid dates in February were still allowed as Dagster cron strings, but then failed during schedule execution. Now, these invalid cronstrings will raise an exception when they are first loaded.
Fixed a bug where owners added to AssetOuts when defining a @graph_multi_asset were not added to the underlying AssetsDefinition.
Fixed a bug where using the & or | operators on AutomationConditions with labels would cause that label to be erased.
[ui] Launching partitioned asset jobs from the launchpad now warns if no partition is selected.
[ui] Fixed unnecessary middle truncation occurring in dialogs.
[ui] Fixed timestamp labels and "Now" line rendering bugs on the sensor tick timeline.
[ui] Opening Dagster's UI with a single job defined takes you to the Overview page rather than the Job page.
[ui] Fix stretched tags in backfill table view for non-partitioned assets.
[ui] Open automation sensor evaluation details in a dialog instead of navigating away.
[ui] Fix scrollbars in dark mode.
[dagster-sigma] Workbooks filtered using a SigmaFilter no longer fetch lineage information.
[dagster-powerbi] Fixed an issue where reports without an upstream dataset dependency would fail to translate to an asset spec.

Deprecations

[dagster-powerbi] DagsterPowerBITranslator.get_asset_key is deprecated in favor of DagsterPowerBITranslator.get_asset_spec().key
[dagster-looker] DagsterLookerApiTranslator.get_asset_key is deprecated in favor of DagsterLookerApiTranslator.get_asset_spec().key
[dagster-sigma] DagsterSigmaTranslator.get_asset_key is deprecated in favor of DagsterSigmaTranslator.get_asset_spec().key
[dagster-tableau] DagsterTableauTranslator.get_asset_key is deprecated in favor of DagsterTableauTranslator.get_asset_spec().key

1.9.3 (core) / 0.25.3 (libraries)

New

Added run_id to the run_tags index to improve database performance. Run dagster instance migrate to update the index. (Thanks, @HynekBlaha!)
Added icons for kind tags: Cassandra, ClickHouse, CockroachDB, Doris, Druid, Elasticsearch, Flink, Hadoop, Impala, Kafka, MariaDB, MinIO, Pinot, Presto, Pulsar, RabbitMQ, Redis, Redpanda, ScyllaDB, Starrocks, and Superset. (Thanks, @swrookie!)
Added a new icon for the Denodo kind tag. (Thanks, @tintamarre!)
Errors raised from defining more than one Definitions object at module scope now include the object names so that the source of the error is easier to determine.
[ui] Asset metadata entries like dagster/row_count now appear on the events page and are properly hidden on the overview page when they appear in the sidebar.
[dagster-aws] PipesGlueClient now attaches AWS Glue metadata to Dagster results produced during Pipes invocation.
[dagster-aws] PipesEMRServerlessClient now attaches AWS EMR Serverless metadata to Dagster results produced during Pipes invocation and adds Dagster tags to the job run.
[dagster-aws] PipesECSClient now attaches AWS ECS metadata to Dagster results produced during Pipes invocation and adds Dagster tags to the ECS task.
[dagster-aws] PipesEMRClient now attaches AWS EMR metadata to Dagster results produced during Pipes invocation.
[dagster-databricks] PipesDatabricksClient now attaches Databricks metadata to Dagster results produced during Pipes invocation and adds Dagster tags to the Databricks job.
[dagster-fivetran] Added load_fivetran_asset_specs function. It can be used with the FivetranWorkspace resource and DagsterFivetranTranslator translator to load your Fivetran connector tables as external assets in Dagster.
[dagster-looker] Errors are now handled more gracefully when parsing derived tables.
[dagster-sigma] Sigma assets now contain extra metadata and kind tags.
[dagster-sigma] Added support for direct workbook to warehouse table dependencies.
[dagster-sigma] Added include_unused_datasets field to SigmaFilter to disable pulling datasets that aren't used by a downstream workbook.
[dagster-sigma] Added skip_fetch_column_data option to skip loading Sigma column lineage. This can speed up loading large instances.
[dagster-sigma] Introduced an experimental dagster-sigma snapshot command, allowing Sigma workspaces to be captured to a file for faster subsequent loading.

Introducing: dagster-airlift (experimental)

dagster-airlift is coming out of stealth. See the initial Airlift RFC here, and the following documentation to learn more:
- A full Airflow migration tutorial.
- A tutorial on federating between Airflow instances.
More Airflow-related content is coming soon! We'd love for you to check it out, and post any comments / questions in the #airflow-migration channel in the Dagster slack.

Bugfixes

Fixed a bug in run status sensors where setting incompatible arguments monitor_all_code_locations and monitored_jobs did not raise the expected error. (Thanks, @apetryla!)
Fixed an issue that would cause the label for AutomationCondition.any_deps_match() and AutomationCondition.all_deps_match() to render incorrectly when allow_selection or ignore_selection were set.
Fixed a bug which could cause code location load errors when using CacheableAssetsDefinitions in code locations that contained AutomationConditions
Fixed an issue where the default multiprocess executor kept holding onto subprocesses after their step completed, potentially causing Too many open files errors for jobs with many steps.
[ui] Fixed an issue introduced in 1.9.2 where the backfill overview page would sometimes display extra assets that were targeted by the backfill.
[ui] Fixed "Open in Launchpad" button when testing a schedule or sensor by ensuring that it opens to the correct deployment.
[ui] Fixed an issue where switching a user setting was immediately saved, rather than waiting for the change to be confirmed.
[dagster-looker] Unions without unique/distinct criteria are now properly handled.
[dagster-powerbi] Fixed an issue where reports without an upstream dataset dependency would fail to translate to an asset spec.
[dagster-sigma] Fixed an issue where API fetches did not paginate properly.

Documentation

Added an Airflow Federation Tutorial.
Added dagster-dingtalk to the list of community supported libraries.
Fixed typos in the dagster-wandb (Weights and Biases) documentation. (Thanks, @matt-weingarten!)
Updated the Role-based Access Control (RBAC) documentation.
Added additional information about filtering to the dagster-sigma documentation.

Dagster Plus

[ui] Fixed an issue with filtering and catalog search in branch deployments.
[ui] Fixed an issue where the asset graph would reload unexpectedly.

1.9.2 (core) / 0.25.2 (libraries)

New

Introduced a new constructor, AssetOut.from_spec, that will construct an AssetOut from an AssetSpec.
[ui] Column tags are now displayed in the Column name section of the asset overview page.
[ui] Introduced an icon for the gcs (Google Cloud Storage) kind tag.
[ui] Introduced icons for report and semanticmodel kind tags.
[ui] The tooltip for a tag containing a cron expression now shows a human-readable, timezone-aware cron string.
[ui] Asset check descriptions are now sourced from docstrings and rendered in the UI. (Thanks, @marijncv!)
[dagster-aws] Added option to propagate tags to ECS tasks when using the EcsRunLauncher. (Thanks, @zyd14!)
[dagster-dbt] You can now implement DagsterDbtTranslator.get_code_version to customize the code version for your dbt assets. (Thanks, @Grzyblon!)
[dagster-pipes] Added the ability to pass arbitrary metadata to PipesClientCompletedInvocation. This metadata will be attached to all materializations and asset checks stored during the pipes invocation.
[dagster-powerbi] During a full workspace scan, owner and column metadata is now automatically attached to assets.

Bugfixes

Fixed an issue with AutomationCondition.execution_in_progress which would cause it to evaluate to True for unpartitioned assets that were part of a run that was in progress, even if the asset itself had already been materialized.
Fixed an issue with AutomationCondition.run_in_progress that would cause it to ignore queued runs.
Fixed an issue that would cause a default_automation_condition_sensor to be constructed for user code servers running on dagster version < 1.9.0 even if the legacy auto_materialize: use_sensors configuration setting was set to False.
[ui] Fixed an issue when executing asset checks where the wrong job name was used in some situations. The correct job name is now used.
[ui] Selecting assets with 100k+ partitions no longer causes the asset graph to temporarily freeze.
[ui] Fixed an issue that could cause a GraphQL error on certain pages after removing an asset.
[ui] The asset events page no longer truncates event history in cases where both materialization and observation events are present.
[ui] The backfill coordinator logs tab no longer sits in a loading state when no logs are available to display.
[ui] Fixed issue which would cause the "Partitions evaluated" label on an asset's automation history page to incorrectly display 0 in cases where all partitions were evaluated.
[ui] Fix "Open in Playground" link when testing a schedule or sensor by ensuring that it opens to the correct deployment.
[ui] Fixed an issue where the asset graph would reload unexpectedly.
[dagster-dbt] Fixed an issue where the SQL filepath for a dbt model was incorrectly resolved when the dbt manifest file was built on a Windows machine, but executed on a Unix machine.
[dagster-pipes] Asset keys containing embedded / characters now work correctly with Dagster Pipes.

Documentation

Community-hosted integrations are now listed on the Integrations page.
Added a tutorial, reference page and API docs for dagster-airlift.
Fixed a typo in the label for superseded APIs. (Thanks, @matt-weingarten!)

Deprecations

The types-sqlalchemy package is no longer included in the dagster[pyright] extra package.

Dagster Plus

[ui] The Environment Variables table can now be sorted by name and update time.
[ui] The code location configuration dialog now contains more metadata about the code location.
[ui] Fixed an issue where the incorrect user icons were shown in the Users table when a search filter had been applied.

1.9.1 (core) / 0.25.1 (libraries)

New

dagster project scaffold now has an option to create dagster projects from templates with excluded files/filepaths.
[ui] Filters in the asset catalog now persist when navigating subdirectories.
[ui] The Run page now displays the partition(s) a run was for.
[ui] Filtering on owners/groups/tags is now case-insensitive.
[dagster-tableau] the helper function parse_tableau_external_and_materializable_asset_specs is now available to parse a list of Tableau asset specs into a list of external asset specs and materializable asset specs.
[dagster-looker] Looker assets now by default have owner and URL metadata.
[dagster-k8s] Added a per_step_k8s_config configuration option to the k8s_job_executor, allowing the k8s configuration of individual steps to be configured at run launch time (thanks @Kuhlwein!)
[dagster-fivetran] Introduced DagsterFivetranTranslator to customize assets loaded from Fivetran.
[dagster-snowflake] dagster_snowflake.fetch_last_updated_timestamps now supports ignoring tables not found in Snowflake instead of raising an error.

Bugfixes

Fixed issue which would cause a default_automation_condition_sensor to be constructed for user code servers running on dagster version < 1.9.0 even if the legacy auto_materialize: use_sensors configuration setting was set to False.
Fixed an issue where running dagster instance migrate on Dagster version 1.9.0 constructed a SQL query that exceeded the maximum allowed depth.
Fixed an issue where wiping a dynamically partitioned asset causes an error.
[dagster-polars] ImportErrors are no longer raised when bigquery libraries are not installed [#25708]

Documentation

[dagster-dbt] A guide on how to use dbt defer with Dagster branch deployments has been added to the dbt reference.

1.9.0 (core) / 0.25.0 (libraries)

Major changes since 1.8.0 (core) / 0.24.0 (libraries)

Automation

Declarative Automation, the system which enables setting per-asset AutomationConditions, is no longer experimental. We now recommend using this system in all cases where asset-centric orchestration is desired. A suite of built-in static constructors have been added for common usecases, such as AutomationCondition.on_missing() (which can fill in missing partitions of assets as soon as upstream data is available), and AutomationCondition.all_deps_blocking_checks_passed() (which can prevent materialization of assets until all upstream blocking checks have passed).
You can now assign AutomationConditions to asset checks, via the automation_condition parameter on @asset_check or AssetCheckSpec.
You can now assign AutomationConditions to observable source assets, via the automation_condition parameter on @observable_source_asset.
[experimental] You can now define custom subclasses of AutomationCondition to execute arbitrary Python code in the context of a broader expression. This allows you to compose built-in conditions with custom business logic.
The target arguments on schedules and sensors are now marked stable, allowing a stable way for schedules and sensors to target asset selections without needing to define a job.

Integrations

Introduced a slate of integrations with business intelligence (BI) tools, enabling dashboards, views, and reports to be represented in the Dagster asset graph.
- Looker
- Power BI
- Sigma
- Tableau
A rich set of metadata is now automatically collected by our suite of ELT integrations.
- The dagster/table_name metadata tag, containing the fully-qualified name of the destination model, has been added for Airbyte, dlt, Fivetran and Sling assets.
- The dagster/row_count metadata tag, containing the number of records loaded in the corresponding run, has been added for dlt and Sling assets.
- The dagster/column_schema metadata tag, containing column schema information of the destination tables, has been added for Fivetran assets.
- Column lineage information is now collected for Sling assets.
dagster-pipes are replacing the now deprecated Step Launchers as the new recommended approach for executing remote Spark jobs. Three new Pipes clients for running Spark applications on Amazon Web Services have been added:
- dagster_aws.pipes.PipesGlueClient
- dagster_aws.pipes.PipesEMRServerlessClient
- dagster_aws.pipes.PipesEMRClient

UI

Several changes have been made to the information architecture to make it easier to find what you’re looking for:
- Backfills have been moved from their own tab underneath the Overview page to entries within the table on the Runs page. This reflects the fact that backfills and runs are similar entities that share most properties. You can continue to use the legacy Runs page with the “Revert to legacy Runs page” user setting. (GitHub Discussion)
- “Jobs” is now a page reachable from the top-level navigation pane. It replaces the Jobs tab within the Overview page.
- “Automations” is now a page reachable from the top-level navigation pane. It replaces the schedule and sensor tabs within the Overview page.
@asset and AssetSpec now have a kinds attribute that enables specifying labels that show up on asset nodes in the asset graph in the UI. This supersedes the compute_kind attribute.

Changes since 1.8.13 (core) / 0.24.13 (libraries)

New

The tags parameter to @asset and AssetSpec is no longer marked as experimental.
The @observable_source_asset decorator now supports an automation_condition argument.
AutomationCondition and associated APIs are no longer marked as experimental.
Added a new use_user_code_server parameter to AutomationConditionSensorDefinition. If set, the sensor will be evaluated in the user code server (as traditional sensors are), allowing custom AutomationCondition subclasses to be evaluated.
Added a new column to the BulkActions table, a new column to the Runs table, and a new BackfillTags table to improve the performance of the Runs page. To take advantage of these performance improvements, run dagster instance migrate. This migration involves a schema migration to add the new columns and table, and a data migration to populate the new columns for historical backfills and runs.
Performance improvements when loading definitions with multi-assets with many asset keys.
[ui] The previously-experimental changes to the top nav are now enabled for all users.
[ui] Added new code location pages which provide information regarding library versions, metadata, and definitions.
[ui] The new version of the Runs page is now enabled by default. To use the legacy version of the Runs page, toggle the "Revert to legacy Runs page" user setting.
[ui] Clicking an asset with failed partitions on the asset health overview now takes you to a list of the failed partitions.
[ui] The Materialize button runs pre-flight checks more efficiently, resulting in faster run launch times.
[dagster-pipes] Added support for multi-container log streaming (thanks, @MattyKuzyk!)
[dagster-docker] container_kwargs.stop_timeout can now be set when using the DockerRunLauncher or docker_executor to configure the amount of time that Docker will wait when terminating a run for it to clean up before forcibly stopping it with a SIGKILL signal.
[dagster-dbt] Performance improvements when loading definitions using build_dbt_asset_selection.

Bugfixes

[ui] Fixed redirect behavior on full pageloads of the legacy auto-materialize overview page.
[ui] Plots for assets that emit materialization and observation events at different rates no longer display a time period missing the more frequent event type.
[ui] Fixed issue causing scrolling to misbehave on the concurrency settings page.
[helm] The blockOpConcurrencyLimitedRuns section of queuedRunCoordinator now correctly templates the appropriate config.
[dagster-pipes] Fixed issue where k8s ops would fail after 4 hours (thanks, @MattyKuzyk!)

Documentation

[dagster-dbt] Added guide for using dbt defer with Dagster branch deployments.
[docs] Step Launchers documentation has been removed and replaced with references to Dagster Pipes.
[docs] Fixed code example in Dagster Essentials (thanks, @aleexharris!)

Breaking Changes

dagster no longer supports Python 3.8, which hit EOL on 2024-10-07.
dagster now requires pydantic>=2.
By default, AutomationConditionSensorDefinitions will now emit backfills to handle cases where more than one partition of an asset is requested on a given tick. This allows that asset's BackfillPolicy to be respected. This feature can be disabled by setting allow_backfills to False.
Passing a custom PartitionsDefinition subclass into a Definitions object now issues an error instead of a deprecation warning.
AssetExecutionContext is no longer a subclass of OpExecutionContext. At this release, AssetExecutionContext and OpExecutionContext implement the same methods, but in the future, the methods implemented by each class may diverge. If you have written helper functions with OpExecutionContext type annotations, they may need to be updated to include AssetExecutionContext depending on your usage. Explicit calls to isinstance(context, OpExecutionContext) will now fail if context is an AssetExecutionContext.
The asset_selection parameter on AutomationConditionSensorDefinition has been renamed to target, to align with existing sensor APIs.
The experimental freshness_policy_sensor has been removed, as it relies on the long-deprecated FreshnessPolicy API.
The deprecated external_assets_from_specs and external_asset_from_spec methods have been removed. Users should use AssetsDefinition(specs=[...]), or pass specs directly into the Definitions object instead.
AssetKey objects can no longer be iterated over or indexed in to. This behavior was never an intended access pattern and in all observed cases was a mistake.
The dagster/relation_identifier metadata key has been renamed to dagster/table_name.
[dagster-ge] dagster-ge now only supports great_expectations>=0.17.15. The ge_validation_op_factory API has been replaced with the API previously called ge_validation_op_factory_v3.
[dagster-aws] Removed deprecated parameters from dagster_aws.pipes.PipesGlueClient.run.
[dagster-embedded-elt] Removed deprecated parameter dlt_dagster_translator from @dlt_assets. The dagster_dlt_translator parameter should be used instead.
[dagster-polars] Dropped support for saving storage-level arbitrary metadata via IOManagers.

Deprecations

The DataBricksPysparkStepLauncher, EmrPySparkStepLauncher, and any custom subclass of StepLauncher have been marked as deprecated, but will not be removed from the codebase until Dagster 2.0 is released, meaning they will continue to function as they currently do for the foreseeable future. Their functionality has been superseded by the interfaces provided by dagster-pipes, and so future development work will be focused there.
The experimental multi_asset_sensor has been marked as deprecated, as its main use cases have been superseded by the AutomationCondition APIs. However, it will not be removed until version 2.0.0.

1.8.13 (core) / 0.24.13 (libraries)

New

Performance improvements when loading code locations using multi-assets with many asset keys.
AutomationCondition.in_progress() now will be true if an asset partition is part of an in-progress backfill that has not yet executed it. The prior behavior, which only considered runs, is encapsulated in AutomationCondition.execution_in_progress().
[ui] Added tag filter to the jobs page.
[ui] Preserve user login state for a longer period of time.
[dagster-dbt] Performance improvements when loading definitions using build_dbt_asset_selection.
[dagster-docker] container_kwargs.stop_timeout can now be set when using the DockerRunLauncher or docker_executor to configure the amount of time that Docker will wait when terminating a run for it to clean up before forcibly stopping it with a SIGKILL signal.
[dagster-sigma] The Sigma integration now fetches initial API responses in parallel, speeding up initial load.
[dagster-looker] Attempt to naively render liquid templates for derived table sql.
[dagster-looker] Added support for views and explores that rely on refinements or extends.
[dagster-looker] When fetching explores and dashboards from the Looker API, retrieve in parallel.

Bugfixes

Fixed an issue with AutomationCondition.eager() that could cause it to attempt to launch a second attempt of an asset in cases where it was skipped or failed during a run where one of its parents successfully materialized.
Fixed an issue which would cause AutomationConditionSensorDefinitions to not be evaluated if the use_user_code_server value was toggled after the initial evaluation.
Fixed an issue where configuration values for aliased pydantic fields would be dropped.
[ui] Fix an issue in the code locations page where invalid query parameters could crash the page.
[ui] Fix navigation between deployments when query parameters are present in the URL.
[helm] the blockOpConcurrencyLimitedRuns section of queuedRunCoordinator now correctly templates the appropriate config.
[dagster-sigma] Fixed pulling incomplete data for very large workspaces.

1.8.12 (core) / 0.24.12 (libraries)

New

The AutomationCondition.eager(), AutomationCondition.missing(), and AutomationCondition.on_cron conditions are now compatible with asset checks.
Added AssetSelection.materializable(), which returns only assets that are materializable in an existing selection.
Added a new AutomationCondition.all_deps_blocking_checks_passed condition, which can be used to prevent materialization when any upstream blocking checks have failed.
Added a code_version parameter to the @graph_asset decorator.
If a LaunchPartitionBackfill mutation is submitted to GQL with invalid partition keys, it will now return an early PartitionKeysNotFoundError.
AssetSelection.checks_for_assets now accepts AssetKeys and string asset keys, in addition to AssetsDefinitions.
[ui] Added a search bar to partitions tab on the asset details page.
[ui] Restored docked left nav behavior for wide viewports.
[dagster-aws] get_objects now has a since_last_modified that enables only fetching objects modified after a given timestamp.
[dagster-aws] New AWS EMR Dagster Pipes client (dagster_aws.pipes.PipesEMRCLient ) for running and monitoring AWS EMR jobs from Dagster.
[dagster-looker] Pinned the looker-sdk dependency below 24.18.0 to avoid this issue: https://github.com/looker-open-source/sdk-codegen/issues/1518.

Bugfixes

Fixed an issue which could cause incorrect evaluation results when using self-dependent partition mappings with AutomationConditions that operate over dependencies.
[ui] Fixed an issue where the breadcumb on asset pages would flicker nonstop.
[dagster-embedded-elt] Fixed extraction of metadata for dlt assets whose source and destination identifiers differ.
[dagster-databricks] Fixed a permissioning gap that existed with the DatabricksPySparkStepLauncher, so that permissions are now set correctly for non-admin users.
[dagster-dbt] Fixed an issue where column metadata generated with fetch_column_metadata did not work properly for models imported through dbt dependencies.

Documentation

[dagster-k8s] DagsterK8sPipesClient.run now shows up in API docs.

Dagster Plus

[ui] Fixed a bug in the catalog UI where owners filters were not applied correctly.
[ui] Fixed width of the column lineage dropdown selector on the asset page.
[ui] Column lineage now correctly renders when set on asset definition metadata
[ui] Fixed Settings link on the list of deployments, for users in the legacy navigation flag.

1.8.11 (core) / 0.24.11 (libraries)

New

[experimental] AutomationCondition.eager() will now only launch runs for missing partitions which become missing after the condition has been added to the asset. This avoids situations in which the eager policy kicks off a large amount of work when added to an asset with many missing historical static/dynamic partitions.
[experimental] Added a new AutomationCondition.asset_matches() condition, which can apply a condition against an arbitrary asset in the graph.
[experimental] Added the ability to specify multiple kinds for an asset with the kinds parameter.
[dagster-github] Added create_pull_request method on GithubClient that enables creating a pull request.
[dagster-github] Added create_ref method on GithubClient that enables creating a new branch.
[dagster-embedded-elt] dlt assets now generate column metadata for child tables.
[dagster-embedded-elt] dlt assets can now fetch row count metadata with dlt.run(...).fetch_row_count() for both partitioned and non-partitioned assets. Thanks @kristianandre!
[dagster-airbyte] relation identifier metadata is now attached to Airbyte assets.
[dagster-embedded-elt] relation identifier metadata is now attached to sling assets.
[dagster-embedded-elt] relation identifier metadata is now attached to dlt assets.

Bugfixes

PartitionedConfig objects can now return a RunConfig without causing a crash.
Corrected the AssetIn.__new__ typing for the dagster_type argument.
[dagster-embedded-elt] dlt assets now generate correct column metadata after the first materialization.
[dagster-embedded-elt] Sling's fetch_row_count() method now works for databases returning uppercase column names. Thanks @kristianandre!
[dagster-gcp] Ensure blob download is flushed to temporary file for GCSFileManager.read operations. Thanks @ollie-bell!

Dagster Plus

Fixed a bug in the catalog UI where owners filters were not applied correctly.

1.8.10 (core) / 0.24.10 (libraries)

New

JobDefinition, @job, and define_asset_job now take a run_tags parameter. If run_tags are defined, they will be attached to all runs of the job, and tags will not be. If run_tags is not set, then tags are attached to all runs of the job (status quo behavior). This change enables the separation of definition-level and run-level tags on jobs.
Then env var DAGSTER_COMPUTE_LOG_TAIL_WAIT_AFTER_FINISH can now be used to pause before capturing logs (thanks @HynekBlaha!)
The kinds parameter is now available on AssetSpec.
OutputContext now exposes the AssetSpec of the asset that is being stored as an output (thanks, @marijncv!)
[experimental] Backfills are incorporated into the Runs page to improve observability and provide a more simplified UI. See the GitHub discussion for more details.
[ui] The updated navigation is now enabled for all users. You can revert to the legacy navigation via a feature flag. See GitHub discussion for more.
[ui] Improved performance for loading partition statuses of an asset job.
[dagster-docker] Run containers launched by the DockerRunLauncher now include dagster/job_name and dagster/run_id labels.
[dagster-aws] The ECS launcher now automatically retries transient ECS RunTask failures (like capacity placement failures).

Bugfixes

Changed the log volume for global concurrency blocked runs in the run coordinator to be less spammy.
[ui] Asset checks are now visible in the run page header when launched from a schedule.
[ui] Fixed asset group outlines not rendering properly in Safari.
[ui] Reporting a materialization event now removes the asset from the asset health "Execution failures" list and returns the asset to a green / success state.
[ui] When setting an AutomationCondition on an asset, the label of this condition will now be shown in the sidebar on the Asset Details page.
[ui] Previously, filtering runs by Created date would include runs that had been updated after the lower bound of the requested time range. This has been updated so that only runs created after the lower bound will be included.
[ui] When using the new experimental navigation flag, added a fix for the automations page for code locations that have schedules but no sensors.
[ui] Fixed tag wrapping on asset column schema table.
[ui] Restored object counts on the code location list view.
[ui] Padding when displaying warnings on unsupported run coordinators has been corrected (thanks @hainenber!)
[dagster-k8s] Fixed an issue where run termination sometimes did not terminate all step processes when using the k8s_job_executor, if the termination was initiated while it was in the middle of launching a step pod.

Documentation

Corrections on the Dagster instance concept page (thanks @mheguy!)
Corrections on the code locations concept page (thanks @tiberiuana!)
Repeated words removed (thanks @tianzedavid!)
[dagster-deltalake] Corrections and improvements (thanks @avriiil!)
[dagster-aws] Added docs for PipesEMRServerlessClient.
[dagster-cli] A guide on how to validate Dagster definitions using dagster definitions validate have been added.
[dagster-databricks] Added docs for using Databricks Pipes with existing clusters.
[dagster-dbt] Corrected sample sql code (thanks @b-per!)

1.8.9 (core) / 0.24.9 (libraries)

New

AssetSpec now has a with_io_manager_key method that returns an AssetSpec with the appropriate metadata entry to dictate the key for the IO manager used to load it. The deprecation warning for SourceAsset now references this method.
Added a max_runtime_seconds configuration option to run monitoring, allowing you to specify that any run in your Dagster deployment should terminate if it exceeds a certain runtime. Prevoiusly, jobs had to be individually tagged with a dagster/max_runtime tag in order to take advantage of this feature. Jobs and runs can still be tagged in order to override this value for an individual run.
It is now possible to set both tags and a custom execution_fn on a ScheduleDefinition. Schedule tags are intended to annotate the definition and can be used to search and filter in the UI. They will not be attached to run requests emitted from the schedule if a custom execution_fn is provided. If no custom execution_fn is provided, then for back-compatibility the tags will also be automatically attached to run requests emitted from the schedule.
SensorDefinition and all of its variants/decorators now accept a tags parameter. The tags annotate the definition and can be used to search and filter in the UI.
Added the dagster definitions validate command to Dagster CLI. This command validates if Dagster definitions are loadable.
[dagster-databricks] Databricks Pipes now allow running tasks in existing clusters.

Bugfixes

Fixed an issue where calling build_op_context in a unit test would sometimes raise a TypeError: signal handler must be signal.SIG_IGN, signal.SIG_DFL, or a callable object Exception on process shutdown.
[dagster-webserver] Fix an issue where the incorrect sensor/schedule state would appear when using DefaultScheduleStatus.STOPPED / DefaultSensorStatus.STOPPED after performing a reset.

Documentation

[dagster-pipes] Fixed inconsistencies in the k8s pipes example.
[dagster-pandas-pyspark] Fixed example in the Spark/Pandas SDA guide.

Dagster Plus

Fixed an issue where users with Launcher permissions for a particular code location were not able to cancel backfills targeting only assets in that code location.
Fixed an issue preventing long-running alerts from being sent when there was a quick subsequent run.

1.8.8 (core) / 0.24.8 (libraries)

New

Added --partition-range option to dagster asset materialize CLI. This option only works for assets with single-run Backfill Policies.
Added a new .without() method to AutomationCondition.eager(), AutomationCondition.on_cron(), and AutomationCondition.on_missing() which allows sub-conditions to be removed, e.g. AutomationCondition.eager().without(AutomationCondition.in_latest_time_window()).
Added AutomationCondition.on_missing(), which materializes an asset partition as soon as all of its parent partitions are filled in.
pyproject.toml can now load multiple Python modules as individual Code Locations. Thanks, @bdart!
[ui] If a code location has errors, a button will be shown to view the error on any page in the UI.
[dagster-adls2] The ADLS2PickleIOManager now accepts lease_duration configuration. Thanks, @0xfabioo!
[dagster-embedded-elt] Added an option to fetch row count metadata after running a Sling sync by calling sling.replicate(...).fetch_row_count().
[dagster-fivetran] The dagster-fivetran integration will now automatically pull and attach column schema metadata after each sync.

Bugfixes

Fixed an issue which could cause errors when using AutomationCondition.any_downstream_condition() with downstream AutoMaterializePolicy objects.
Fixed an issue where process_config_and_initialize did not properly handle processing nested resource config.
[ui] Fixed an issue that would cause some AutomationCondition evaluations to be labeled DepConditionWrapperCondition instead of the key that they were evaluated against.
[dagster-webserver] Fixed an issue with code locations appearing in fluctuating incorrect state in deployments with multiple webserver processes.
[dagster-embedded-elt] Fixed an issue where Sling column lineage did not correctly resolve int the Dagster UI.
[dagster-k8s] The wait_for_pod check now waits until all pods are available, rather than erroneously returning after the first pod becomes available. Thanks @easontm!

Dagster Plus

Backfill daemon logs are now available in the "Coordinator Logs" tab in a backfill details page.
Users without proper code location permissions can no longer edit sensor cursors.

1.8.7 (core) / 0.24.7 (libraries)

New

The AssetSpec constructor now raises an error if an invalid group name is provided, instead of an error being raised when constructing the Definitions object.
dagster/relation_identifier metadata is now automatically attached to assets which are stored using a DbIOManager.
[ui] Streamlined the code location list view.
[ui] The “group by” selection on the Timeline Overview page is now part of the query parameters, meaning it will be retained when linked to directly or when navigating between pages.
[dagster-dbt] When instantiating DbtCliResource, the project_dir argument will now override the DBT_PROJECT_DIR environment variable if it exists in the local environment (thanks, @marijncv!).
[dagster-embedded-elt] dlt assets now generate rows_loaded metadata (thanks, @kristianandre!).
Added support for pydantic version 1.9.0.

Bugfixes

Fixed a bug where setting asset_selection=[] on RunRequest objects yielded from sensors using asset_selection would select all assets instead of none.
Fixed bug where the tick status filter for batch-fetched graphql sensors was not being respected.
[examples] Fixed missing assets in assets_dbt_python example.
[dagster-airbyte] Updated the op names generated for Airbyte assets to include the full connection ID, avoiding name collisions.
[dagster-dbt] Fixed issue causing dagster-dbt to be unable to load dbt projects where the adapter did not have a database field set (thanks, @dargmuesli!)
[dagster-dbt] Removed a warning about not being able to load the dbt.adapters.duckdb module when loading dbt assets without that package installed.

Documentation

Fixed typo on the automation concepts page (thanks, @oedokumaci!)

Dagster Plus

You may now wipe specific asset partitions directly from the execution context in user code by calling DagsterInstance.wipe_asset_partitions.
Dagster+ users with a "Viewer" role can now create private catalog views.
Fixed an issue where the default IOManager used by Dagster+ Serverless did not respect setting allow_missing_partitions as metadata on a downstream asset.

1.8.6 (core) / 0.24.6 (libraries)

Bugfixes

Fixed an issue where runs in Dagster+ Serverless that materialized partitioned assets would sometimes fail with an object has no attribute '_base_path' error.
[dagster-graphql] Fixed an issue where the statuses filter argument to the sensorsOrError GraphQL field was sometimes ignored when querying GraphQL for multiple sensors at the same time.

1.8.5 (core) / 0.24.5 (libraries)

New

Updated multi-asset sensor definition to be less likely to timeout queries against the asset history storage.
Consolidated the CapturedLogManager and ComputeLogManager APIs into a single base class.
[ui] Added an option under user settings to clear client side indexeddb caches as an escape hatch for caching related bugs.
[dagster-aws, dagster-pipes] Added a new PipesECSClient to allow Dagster to interface with ECS tasks.
[dagster-dbt] Increased the default timeout when terminating a run that is running a dbt subprocess to wait 25 seconds for the subprocess to cleanly terminate. Previously, it would only wait 2 seconds.
[dagster-sdf] Increased the default timeout when terminating a run that is running an sdf subprocess to wait 25 seconds for the subprocess to cleanly terminate. Previously, it would only wait 2 seconds.
[dagster-sdf] Added support for caching and asset selection (Thanks, akbog!)
[dagster-dlt] Added support for AutomationCondition using DagsterDltTranslator.get_automation_condition() (Thanks, aksestok!)
[dagster-k8s] Added support for setting dagsterDaemon.runRetries.retryOnAssetOrOpFailure to False in the Dagster Helm chart to prevent op retries and run retries from simultaneously firing on the same failure.
[dagster-wandb] Removed usage of deprecated recursive parameter (Thanks, chrishiste!)

Bugfixes

[ui] Fixed a bug where in-progress runs from a backfill could not be terminated from the backfill UI.
[ui] Fixed a bug that caused an "Asset must be part of at least one job" error when clicking on an external asset in the asset graph UI
Fixed an issue where viewing run logs with the latest 5.0 release of the watchdog package raised an exception.
[ui] Fixed issue causing the “filter to group” action in the lineage graph to have no effect.
[ui] Fixed case sensitivity when searching for partitions in the launchpad.
[ui] Fixed a bug which would redirect to the events tab for an asset if you loaded the partitions tab directly.
[ui] Fixed issue causing runs to get skipped when paging through the runs list (Thanks, @HynekBlaha!)
[ui] Fixed a bug where the asset catalog list view for a particular group would show all assets.
[dagster-dbt] fix bug where empty newlines in raw dbt logs were not being handled correctly.
[dagster-k8s, dagster-celery-k8s] Correctly set dagster/image label when image is provided from user_defined_k8s_config. (Thanks, @HynekBlaha!)
[dagster-duckdb] Fixed an issue for DuckDB versions older than 1.0.0 where an unsupported configuration option, custom_user_agent, was provided by default
[dagster-k8s] Fixed an issue where Kubernetes Pipes failed to create a pod if the op name contained capital or non-alphanumeric containers.
[dagster-embedded-elt] Fixed an issue where dbt assets downstream of Sling were skipped

Deprecations

[dagser-aws]: Direct AWS API arguments in PipesGlueClient.run have been deprecated and will be removed in 1.9.0. The new params argument should be used instead.

Dagster Plus

Fixed a bug that caused an error when loading the launchpad for a partition, when using Dagster+ with an agent with version below 1.8.2.
Fixed an issue where terminating a Dagster+ Serverless run wouldn’t forward the termination signal to the job to allow it to cleanly terminate.

1.8.4 (core) / 0.24.4 (libraries)

Bugfixes

Fixed an issue where viewing run logs with the latest 5.0 release of the watchdog package raised an exception.
Fixed a bug that caused an "Asset must be part of at least one job" error when clicking on an external asset in the asset graph UI

Dagster Plus

The default io_manager on Serverless now supports the allow_missing_partitions configuration option.
Fixed a bug that caused an error when loading the launchpad for a partition, when using in Dagster+ with an agent with version below 1.8.2

1.8.3 (core) / 0.24.3 (libraries) (YANKED)

This version of Dagster resulted in errors when trying to launch runs that target individual asset partitions)

New

When different assets within a code location have different PartitionsDefinitions, there will no longer be an implicit asset job __ASSET_JOB_... for each PartitionsDefinition; there will just be one with all the assets. This reduces the time it takes to load code locations with assets with many different PartitionsDefinitions.

1.8.2 (core) / 0.24.2 (libraries)

New

[ui] Improved performance of the Automation history view for partitioned assets
[ui] You can now delete dynamic partitions for an asset from the ui
[dagster-sdf] Added support for quoted table identifiers (Thanks, @akbog!)
[dagster-openai] Add additional configuration options for the OpenAIResource (Thanks, @chasleslr!)
[dagster-fivetran] Fivetran assets now have relation identifier metadata.

Bugfixes

[ui] Fixed a collection of broken links pointing to renamed Declarative Automation pages.
[dagster-dbt] Fixed issue preventing usage of MultiPartitionMapping with @dbt_assets (Thanks, @arookieds!)
[dagster-azure] Fixed issue that would cause an error when configuring an AzureBlobComputeLogManager without a secret_key (Thanks, @ion-elgreco and @HynekBlaha!)

Documentation

Added API docs for AutomationCondition and associated static constructors.
[dagster-deltalake] Corrected some typos in the integration reference (Thanks, @dargmuesli!)
[dagster-aws] Added API docs for the new PipesCloudWatchMessageReader

1.8.1 (core) / 0.24.1 (libraries)

New

If the sensor daemon fails while submitting runs, it will now checkpoint its progress and attempt to submit the remaining runs on the next evaluation.
build_op_context and build_asset_context now accepts a run_tags argument.
Nested partially configured resources can now be used outside of Definitions.
[ui] Replaced GraphQL Explorer with GraphiQL.
[ui] The run timeline can now be grouped by job or by automation.
[ui] For users in the experimental navigation flag, schedules and sensors are now in a single merged automations table.
[ui] Logs can now be filtered by metadata keys and values.
[ui] Logs for RUN_CANCELED events now display relevant error messages.
[dagster-aws] The new PipesCloudWatchMessageReader can consume logs from CloudWatch as pipes messages.
[dagster-aws] Glue jobs launched via pipes can be automatically canceled if Dagster receives a termination signal.
[dagster-azure] AzureBlobComputeLogManager now supports service principals, thanks @ion-elgreco!
[dagster-databricks] dagster-databricks now supports databricks-sdk<=0.17.0.
[dagster-datahub] dagster-datahub now allows pydantic versions below 3.0.0, thanks @kevin-longe-unmind!
[dagster-dbt] The DagsterDbtTranslator class now supports a modfiying the AutomationCondition for dbt models by overriding get_automation_condition.
[dagster-pandera] dagster-pandera now supports polars.
[dagster-sdf] Table and columns tests can now be used as asset checks.
[dagster-embedded-elt] Column metadata and lineage can be fetched on Sling assets by chaining the new replicate(...).fetch_column_metadata() method.
[dagster-embedded-elt] dlt resource docstrings will now be used to populate asset descriptions, by default.
[dagster-embedded-elt] dlt assets now generate column metadata.
[dagster-embedded-elt] dlt transformers now refer to the base resource as upstream asset.
[dagster-openai] OpenAIResource now supports organization, project and base_url for configurting the OpenAI client, thanks @chasleslr!
[dagster-pandas][dagster-pandera][dagster-wandb] These libraries no longer pin numpy<2, thanks @judahrand!

Bugfixes

Fixed a bug for job backfills using backfill policies that materialized multiple partitions in a single run would be launched multiple times.
Fixed an issue where runs would sometimes move into a FAILURE state rather than a CANCELED state if an error occurred after a run termination request was started.
[ui] Fixed a bug where an incorrect dialog was shown when canceling a backfill.
[ui] Fixed the asset page header breadcrumbs for assets with very long key path elements.
[ui] Fixed the run timeline time markers for users in timezones that have off-hour offsets.
[ui] Fixed bar chart tooltips to use correct timezone for timestamp display.
[ui] Fixed an issue introduced in the 1.8.0 release where some jobs created from graph-backed assets were missing the “View as Asset Graph” toggle in the Dagster UI.

Breaking Changes

[dagster-airbyte] AirbyteCloudResource now supports client_id and client_secret for authentication - the api_key approach is no longer supported. This is motivated by the deprecation of portal.airbyte.com on August 15, 2024.

Deprecations

[dagster-databricks] Removed deprecated authentication clients provided by databricks-cli and databricks_api
[dagster-embedded-elt] Removed deprecated Sling resources SlingSourceConnection, SlingTargetConnection
[dagster-embedded-elt] Removed deprecated Sling resources SlingSourceConnection, SlingTargetConnection
[dagster-embedded-elt] Removed deprecated Sling methods build_sling_assets, and sync

Documentation

The Integrating Snowflake & dbt with Dagster+ Insights guide no longer erroneously references BigQuery, thanks @dnxie12!

1.8.0 (core) / 0.24.0 (libraries)

Major changes since 1.7.0 (core) / 0.22.0 (libraries)

Core definition APIs

You can now pass AssetSpec objects to the assets argument of Definitions, to let Dagster know about assets without associated materialization functions. This replaces the experimental external_assets_from_specs API, as well as SourceAssets, which are now deprecated. Unlike SourceAssets, AssetSpecs can be used for non-materializable assets with dependencies on Dagster assets, such as BI dashboards that live downstream of warehouse tables that are orchestrated by Dagster. [docs].
[Experimental] You can now merge Definitions objects together into a single larger Definitions object, using the new Definitions.merge API (doc). This makes it easier to structure large Dagster projects, as you can construct a Definitions object for each sub-domain and then merge them together at the top level.

Partitions and backfills

BackfillPolicys assigned to assets are now respected for backfills launched from jobs that target those assets.
You can now wipe materializations for individual asset partitions.

Automation

[Experimental] You can now add AutomationConditions to your assets to have them automatically executed in response to specific conditions (docs). These serve as a drop-in replacement and improvement over the AutoMaterializePolicy system, which is being marked as deprecated.
[Experimental] Sensors and schedules can now directly target assets, via the new target parameter, instead of needing to construct a job.
[Experimental] The Timeline page can now be grouped by job or automation. When grouped by automation, all runs launched by a sensor responsible for evaluating automation conditions will get bucketed to that sensor in the timeline instead of the "Ad-hoc materializations" row. Enable this by opting in to the Experimental navigation feature flag in user settings.

Catalog

The Asset Details page now prominently displays row count and relation identifier (table name, schema, database), when corresponding asset metadata values are provided. For more information, see the metadata and tags docs.
Introduced code reference metadata which can be used to open local files in your editor, or files in source control in your browser. Dagster can automatically attach code references to your assets’ Python source. For more information, see the docs.

Data quality and reliability

[Experimental] Metadata bound checks – The new build_metadata_bounds_checks API [doc] enables easily defining asset checks that fail if a numeric asset metadata value falls outside given bounds.
[Experimental] Freshness checks from dbt config - Freshness checks can now be set on dbt assets, straight from dbt. Check out the API docs for build_freshness_checks_from_dbt_assets for more.

Integrations

Dagster Pipes (PipesSubprocessClient) and its integrations with Lambda (PipesLambdaClient), Kubernetes (PipesK8sClient), and Databricks (PipesDatabricksClient) are no longer experimental.
The new DbtProject class (docs) makes it simpler to define dbt assets that can be constructed in both development and production. DbtProject.prepare_if_dev() eliminates boilerplate for local development, and the dagster-dbt project prepare-and-package CLI can helps pull deps and generate the manifest at build time.
[Experimental] The dagster-looker package can be used to define a set of Dagster assets from a Looker project that is defined in LookML and is backed by git. See the GitHub discussion for more details.

Dagster Plus

Catalog views — In Dagster+, selections into the catalog can now be saved and shared across an organization as catalog views. Catalog views have a name and description, and can be applied to scope the catalog, asset health, and global asset lineage pages against the view’s saved selection.
Code location history — Dagster+ now stores a history of code location deploys, including the ability to revert to a previously deployed configuration.

Changes since 1.7.16 (core) / 0.22.16 (libraries)

New

The target of both schedules and sensors can now be set using an experimental target parameter that accepts an AssetSelection or list of assets. Any assets passed this way will also be included automatically in the assets list of the containing Definitions object.
ScheduleDefinition and SensorDefinition now have a target argument that can accept an AssetSelection.
You can now wipe materializations for individual asset partitions.
AssetSpec now has a partitions_def attribute. All the AssetSpecs provided to a @multi_asset must have the same partitions_def.
The assets argument on materialize now accepts AssetSpecs.
The assets argument on Definitions now accepts AssetSpecs.
The new merge method on Definitions enables combining multiple Definitions object into a single larger Definitions object with their combined contents.
Runs requested through the Declarative Automation system now have a dagster/from_automation_condition: true tag applied to them.
Changed the run tags query to be more performant. Thanks @egordm!
Dagster Pipes and its integrations with Lambda, Kubernetes, and Databricks are no longer experimental.
The Definitions constructor will no longer raise errors when the provided definitions aren’t mutually resolve-able – e.g. when there are conflicting definitions with the same name, unsatisfied resource dependencies, etc. These errors will still be raised at code location load time. The new Definitions.validate_loadable static method also allows performing the validation steps that used to occur in constructor.

AssetsDefinitions object provided to a Definitions object will now be deduped by reference equality. That is, the following will now work:

from dagster import asset, Definitions

@asset
def my_asset(): ...

defs = Definitions(assets=[my_asset, my_asset]) # Deduped into just one AssetsDefinition.

[dagster-embedded-elt] Adds translator options for dlt integration to override auto materialize policy, group name, owners, and tags
[dagster-sdf] Introducing the dagster-sdf integration for data modeling and transformations powered by sdf.
[dagster-dbt] Added a new with_insights() method which can be used to more easily attach Dagster+ Insights metrics to dbt executions: dbt.cli(...).stream().with_insights()

Bugfixes

Dagster now raises an error when an op yields an output corresponding to an unselected asset.
Fixed a bug that caused downstream ops within a graph-backed asset to be skipped when they were downstream of assets within the graph-backed assets that aren’t part of the selection for the current run.
Fixed a bug where code references did not work properly for self-hosted GitLab instances. Thanks @cooperellidge!
[ui] When engine events with errors appear in run logs, their metadata entries are now rendered correctly.
[ui] The asset catalog greeting now uses your first name from your identity provider.
[ui] The create alert modal now links to the alerting documentation, and links to the documentation have been updated.
[ui] Fixed an issue introduced in the 1.7.13 release where some asset jobs were only displaying their ops in the Dagster UI instead of their assets.
Fixed an issue where terminating a run while it was using the Snowflake python connector would sometimes move it into a FAILURE state instead of a CANCELED state.
Fixed an issue where backfills would sometimes move into a FAILURE state instead of a CANCELED state when the backfill was canceled.

Breaking Changes

The experimental and deprecated build_asset_with_blocking_check has been removed. Use the blocking argument on @asset_check instead.
Users with mypy and pydantic 1 may now experience a “metaclass conflict” error when using Config. Previously this would occur when using pydantic 2.
AutoMaterializeSensorDefinition has been renamed AutomationConditionSensorDefinition.
The deprecated methods of the ComputeLogManager have been removed. Custom ComputeLogManager implementations must also implement the CapturedLogManager interface. This will not affect any of the core implementations available in the core dagster package or the library packages.
By default, an AutomationConditionSensorDefinition with the name “default_automation_condition_sensor” will be constructed for each code location, and will handle evaluating and launching runs for all AutomationConditions and AutoMaterializePolicies within that code location. You can restore the previous behavior by setting:
```
auto_materialize:
  use_sensors: False
```
in your dagster.yaml file.
[dagster-dbt] Support for dbt-core==1.6.* has been removed because the version is now end-of-life.
[dagster-dbt] The following deprecated APIs have been removed:
- KeyPrefixDagsterDbtTranslator has been removed. To modify the asset keys for a set of dbt assets, implementDagsterDbtTranslator.get_asset_key() instead.
- Support for setting freshness policies through dbt metadata on field +meta.dagster_freshness_policy has been removed. Use +meta.dagster.freshness_policy instead.
- Support for setting auto-materialize policies through dbt metadata on field +meta.dagster_auto_materialize_policy has been removed. Use +meta.dagster.auto_materialize_policy instead.
- Support for load_assets_from_dbt_project, load_assets_from_dbt_manifest, and dbt_cli_resource has been removed. Use @dbt_assets, DbtCliResource, and DbtProject instead to define how to load dbt assets from a dbt project and to execute them.
- Support for rebuilt ops like dbt_run_op, dbt_compile_op, etc has been removed. Use @op and DbtCliResource directly to execute dbt commands in an op.
Properties on AssetExecutionContext , OpExecutionContext , and ScheduleExecutionContext that include datetimes now return standard Python datetime objects instead of Pendulum datetimes. The types in the public API for these properties have always been datetime and this change should not be breaking in the majority of cases, but Pendulum datetimes include some additional methods that are not present on standard Python datetimes, and any code that was using those methods will need to be updated to either no longer use those methods or transform the datetime into a Pendulum datetime. See the 1.8 migration guide for more information and examples.
MemoizableIOManager, VersionStrategy, SourceHashVersionStrategy, OpVersionContext, ResourceVersionContext, and MEMOIZED_RUN_TAG, which have been deprecated and experimental since pre-1.0, have been removed.

Deprecations

The Run Status column of the Backfills page has been removed. This column was only populated for backfills of jobs. To see the run statuses for job backfills, click on the backfill ID to get to the Backfill Details page.
The experimental external_assets_from_specs API has been deprecated. Instead, you can directly pass AssetSpec objects to the assets argument of the Definitions constructor.
AutoMaterializePolicy has been marked as deprecated in favor of AutomationCondition , which provides a significantly more flexible and customizable interface for expressing when an asset should be executed. More details on how to migrate your AutoMaterializePolicies can be found in the Migration Guide.
SourceAsset has been deprecated. See the major changes section and migration guide for more details.
The asset_partition_key_for_output, asset_partition_keys_for_output, and asset_partition_key_range_for_output, and asset_partitions_time_window_for_output methods on OpExecutionContext have been deprecated. Instead, use the corresponding property: partition_key, partition_keys, partition_key_range, or partition_time_window.
The partitions_def parameter on define_asset_job is now deprecated. The partitions_def for an asset job is determined from the partitions_def attributes on the assets it targets, so this parameter is redundant.
[dagster-shell] create_shell_command_op and create_shell_script_op have been marked as deprecated in favor of PipesSubprocessClient (see details in Dagster Pipes subprocess reference)
[dagster-airbyte] load_assets_from_airbyte_project is now deprecated, because the Octavia CLI that it relies on is an experimental feature that is no longer supported. Use build_airbyte_assets or load_assets_from_airbyte_project instead.

Documentation

The Asset Checks concept overview page now includes a table with all the built-in asset checks.
The Asset Metadata page concept page now includes a table with all the standard “dagster/” metadata keys.
Fixed a typo in the documentation for MonthlyPartitionsDefinition. Thanks @zero_stroke!
Added a new page about Declarative Automation and a guide about customizing automation conditions
Fixed a link in the Limiting concurrency guide.

Dagster Plus

In Dagster+, selections into the catalog can now be saved and shared across an organization as catalog views. Catalog views have a name and description, and can be applied to scope the catalog, asset health, and global asset lineage pages against the view’s saved selection.
In Dagster+ run alerts, if you are running Dagster 1.8 or greater in your user code, you will now receive exception-level information in the alert body.

1.7.16 (core) / 0.23.16 (libraries)

Experimental

[pipes] PipesGlueClient, an AWS Glue pipes client has been added to dagster_aws.

1.7.15 (core) / 0.23.15 (libraries)

New

[dagster-celery-k8s] Added a per_step_k8s_config configuration option to the celery_k8s_job_executor , allowing the k8s configuration of individual steps to be configured at run launch time. Thanks @alekseik1!
[dagster-dbt] Deprecated the log_column_level_metadata macro in favor of the new with_column_metadata API.
[dagster-airbyte] Deprecated load_assets_from_airbyte_project as the Octavia CLI has been deprecated.

Bugfixes

[ui] Fix global search to find matches on very long strings.
Fixed an issue introduced in the 1.7.14 release where multi-asset sensors would sometimes raise an error about fetching too many event records.
Fixes an issue introduced in 1.7.13 where type-checkers interpretted the return type of RunRequest(...) as None
[dagster-aws] Fixed an issue where the EcsRunLauncher would sometimes fail to launch runs when the include_sidecars option was set to True.
[dagster-dbt] Fixed an issue where errors would not propagate through deferred metadata fetches.

Dagster Plus

On June 20, 2024, AWS changed the AWS CloudMap CreateService API to allow resource-level permissions. The Dagster+ ECS Agent uses this API to launch code locations. We’ve updated the Dagster+ ECS Agent CloudFormation template to accommodate this change for new users. Existing users have until October 14, 2024 to add the new permissions and should have already received similar communication directly from AWS.
Fixed a bug with BigQuery cost tracking in Dagster+ insights, where some runs would fail if there were null values for either total_byte_billed or total_slot_ms in the BigQuery INFORMATION_SCHEMA.JOBS table.
Fixed an issue where code locations that failed to load with extremely large error messages or stack traces would sometimes cause errors with agent heartbeats until the code location was redeployed.

1.7.14 (core) / 0.23.14 (libraries)

New

[blueprints] When specifying an asset key in ShellCommandBlueprint, you can now use slashes as a delimiter to generate an AssetKey with multiple path components.
[community-controbution][mlflow] The mlflow resource now has a mlflow_run_id attribute (Thanks Joe Percivall!)
[community-contribution][mlflow] The mlflow resource will now retry when it fails to fetch the mlflow run ID (Thanks Joe Percivall!)

Bugfixes

Fixed an issue introduced in the 1.7.13 release where Dagster would fail to load certain definitions when using Python 3.12.4.
Fixed an issue where in-progress steps would continue running after an unexpected exception caused a run to fail.
[dagster-dbt] Fixed an issue where column lineage was unable to be built in self-referential incremental models.
Fixed an issue where dagster dev was logging unexpectedly without the grpcio<1.65.0 pin.
Fixed an issue where a ContextVar was created in a different context error was raised when executing an async asset.
[community-contribution] multi_asset type-checker fix from @aksestok, thanks!
[community-contribution][ui] Fix to use relative links for manifest/favicon files, thanks @aebrahim!

Documentation

[community-contribution] Fixed helm repo CLI command typo, thanks @fxd24!

Dagster Plus

[ui] The deployment settings yaml editor is now on a page with its own URL, instead of within a dialog.

1.7.13 (core) / 0.23.13 (libraries)

New

The InputContext passed to an IOManager ’s load_input function when invoking the output_value or output_for_node methods on JobExecutionResult now has the name "dummy_input_name" instead of None.
[dagster-ui] Asset materializations can now be reported from the dropdown menu in the asset list view.
[dagster-dbt] DbtProject is adopted and no longer experimental. Using DbtProject helps achieve a setup where the dbt manifest file and dbt dependencies are available and up-to-date, during development and in production. Check out the API docs for more: https://docs.dagster.io/_apidocs/libraries/dagster-dbt#dagster_dbt.DbtProject.
[dagster-dbt] The —use-dbt-project flag was introduced for the cli command dagster-dbt project scaffold. Creating a Dagster project wrapping a dbt project using that flag will include a DbtProject .
[dagster-ui] The Dagster UI now loads events in batches of 1000 in the run log viewer, instead of batches of 10000. This value can be adjusted by setting the DAGSTER_UI_EVENT_LOAD_CHUNK_SIZE environment variable on the Dagster webserver.
Asset backfills will now retry if there is an unexpected exception raised in the middle of the backfill. Previously, they would only retry if there was a problem connecting to the code server while launching runs in the backfill.
Added the ability to monitor jobs which have failed to start in time with the RunFailureReason.START_TIMEOUT run monitoring failure reason. Thanks @jobicarter!
[experimental] Introduced the ability to attach code references to your assets, which allow you to view source code for an asset in your editor or in git source control. For more information, see the code references docs: https://docs.dagster.io/guides/dagster/code-references.
[ui] Performance improvements to loading the asset overview tab.
[ui] Performance improvements for rendering gantt charts with 1000’s of ops/steps.
[dagster-celery] Introduced a new Dagster Celery runner, a more lightweight way to run Dagster jobs without an executor. Thanks, @egordm!

Bugfixes

Fixed a bug that caused tags added to ObserveResult objects to not be stored with the produced AssetObservation event.
Fixed a bug which could cause metadata defined on SourceAssets to be unavailable when accessed in an IOManager.
For subselections of graph-backed multi-assets, there are some situations where we used to unnecessarily execute some of the non-selected assets. Now, we no longer execute them in those situations. There are also some situations where we would skip execution of some ops that might be needed. More information on the particulars is available here.
Fixed the @graph_asset decorator overload missing an owners argument, thanks @askvinni!
Fixed behavior of passing custom image config to the K8sRunLauncher, thanks @marchinho11!
[dagster-dbt] Fixed an issue with emitting column lineage when using BigQuery.
[dagster-k8s] Added additional retries to execute_k8s_job when there was a transient failure while loading logs from the launched job. Thanks @piotrmarczydlo!
[dagster-fivetran] Fixed an issue where the Fivetran connector resource would sometimes hang if there was a networking issue while connecting to the Fivetran API.
[dagster-aws] Fixed an issue where the EMR step launcher would sometimes fail due to multiple versions of the dateutil package being installed in the default EMR python evnrionment.
[ui] The “Create date” column in the runs table now correctly shows the time at which a run was created instead of the time when it started to execute.
[ui] Fixed dark mode colors in run partitions graphs.
[auto-materialize] Fixed an issue which could cause errors in the AutoMaterializeRule.skip_on_parent_missing rule when a parent asset had its PartitionsDefinition changed.
[declarative-automation] Fixed an issue which could cause errors when viewing the evaluation history of assets with AutomationConditions.
[declarative-automation] Previously, AutomationCondition.newly_updated() would trigger on any ASSET_OBSERVATION event. Now, it only triggers when the data version on that event changes.

Breaking Changes

[dagster-dbt] The cli command dagster-dbt project prepare-for-deployment has been replaced by dagster-dbt project prepare-and-package.
[dagster-dbt] During development,DbtProject no longer prepares the dbt manifest file and dbt dependencies in its constructor during initialization. This process has been moved to prepare_if_dev(), that can be called on the DbtProject instance after initialization. Check out the API docs for more: https://docs.dagster.io/_apidocs/libraries/dagster-dbt#dagster_dbt.DbtProject.prepare_if_dev.

Deprecations

Passing GraphDefinition as the job argument to schedules and sensors is deprecated. Derive a job from the GraphDefinition using graph_def.to_job() and pass this instead.

Documentation

Added some additional copy, headings, and other formatting to the dbt quickstart.
Added information about asset checks to the Testing assets guide.
Updated dagster-plus CLI in the sidenav to correctly be dagster-cloud CLI.
Thanks to Tim Nordenfur and Dimitar Vanguelov for fixing a few typos!
Introduced guides to migrate Airflow pipelines to Dagster that leverage the TaskFlow API or are containerized and executed with an operator like the KubernetesPodOperator.
Fixed instructions on setting secrets in Kubernetes Dagster deployments, thanks @abhinavDhulipala!

Dagster Plus

A history of code location deploys can now be viewed on the Code Locations tab under the Deployment view. Previously deployed versions can now be restored from history.
[ui] Various improvements have been made to the asset health dashboard, which is now no longer experimental.
[ui] Fixed issues in per-event asset insights where bar charts incorrectly displayed events in reverse order, and with UTC timestamps.
Fixed a recent regression where creating an alert that notifies asset owners that are teams raises an error.

1.7.12 (core)/ 0.23.12 (libraries)

Bugfixes

[ui] fixes behavior issues with jobs and asset pages introduced in 1.7.11

1.7.11 (core)/ 0.23.11 (libraries)

New

[ui] Improved performance for loading assets that are part of big asset graphs.
[ui] Improved performance for loading job backfills that have thousands of partitions
[ui] The code location page can now be filtered by status
[agent] K8s and ECS agent main loop writes a sentinel file that can be used for liveness checks.
[agent][experimental] ECS CloudFormation template with private IP addresses using NAT Gateways, security groups, IAM role separation, tighter permissions requirements, and improved documentation.
Ephemeral asset jobs are now supported in run status sensors (thanks @the4thamigo-uk)!

Bugfixes

In AssetsDefinition construction, enforce single key per output name
Fixed a bug where freshness checks on assets with both observations and materializations would incorrectly miss a materialization if there’s no observation with dagster/last_updated_timestamp.
Fixed a bug with anomaly detection freshness checks where “not enough records” result would cause the sensor to crash loop.
Fixed a bug that could cause errors in the Asset Daemon if an asset using AutoMaterializeRule.skip_on_not_all_parents_updated_since_cron() rule gained a new dependency with a different PartitionsDefinition.
[ui] Fixed an issue that caused the backfill page not to be scrollable.
[ui] Fixed an issue where filtering by partition on the Runs page wouldn’t work if fetching all of your partitions timed out.
[dagster-dlt] Fixed bug with dlt integration in which partitioned assets would change the file name when using the filesystem destination.
[ui] Fixed an issue where an erroring code location would cause multiple toast popups.
Allow a string to be provided for source_key_prefix arg of load_assets_from_modules. (thanks @drjlin)!
Added a missing debug level log message when loading partitions with polars (thanks Daniel Gafni)!
Set postgres timeout via statement, which improves storage-layer compatibility with Amazon RDS (thanks @james lewis)!
In DBT integration, quote the table identifiers to handle cases where table names require quotes due to special characters. (thanks @alex launi)!
remove deprecated param usage in dagster-wandb integration (thanks @chris histe)!
Add missing QUEUED state to DatabricksRunLifeCycleState (thanks @gabor ratky)!
Fixed a bug with dbt-cloud integration subsetting implementation (thanks @ivan tsarev)!

Breaking Changes

[dagster-airflow] load_assets_from_airflow_dag no longer allows multiple tasks to materialize the same asset.

Documentation

Added type-hinting to backfills example
Added syntax highlighting to some examples (thanks @Niko)!
Fixed broken link (thanks @federico caselli)!

Dagster Plus

The dagster-cloud ci init CLI will now use the --deployment argument as the base deployment when creating a branch deployment. This base deployment will be used for Change Tracking.
The BigQuery dbt insights wrapper dbt_with_bigquery_insights now respects CLI arguments for profile configuration and also selects location / dataset from the profile when available.
[experimental feature] Fixes a recent regression where the UI errored upon attempting to create an insights metric alert.

1.7.10 (core)/ 0.23.10 (libraries)

New

Performance improvements when rendering the asset graph while runs are in progress.
A new API build_freshness_checks_for_dbt_assets which allows users to parameterize freshness checks entirely within dbt. Check out the API docs for more: https://docs.dagster.io/_apidocs/libraries/dagster-dbt#dbt-dagster-dbt.
Asset search results now display compute and storage kind icons.
Asset jobs where the underlying assets have multiple backfill policies will no longer fail at definition time. Instead, the backfill policy for the job will use the minimum max_partitions_per_run from the job’s constituent assets.
[dagstermill] asset_tags can now be specified when building dagstermill assets
[dagster-embedded-elt] Custom asset tags can be applied to Sling assets via the DagsterSlingTranslator
[dagster-embedded-elt] dlt assets now automatically have dagster/storage_kind tags attached

Bugfixes

tags passed to outs in graph_multi_asset now get correctly propagated to the resulting assets.
[ui] Fixed an issue in the where when multiple runs were started at the same time to materialize the same asset, the most recent one was not always shown as in progress in the asset graph in the Dagster UI.
The “newly updated” auto-materialize rule will now respond to either new observations or materializations for observable assets.
build_metadata_bounds_checks now no longer errors when targeting metadata keys that have special characters.

Documentation

The Schedule concept docs got a revamp! Specifically, we:
- Updated the Schedule concept page to be a “jumping off” point for all-things scheduling, including a high-level look at how schedules work, their benefits, and what you need to know before diving in
- Added some basic how-to guides for automating assets and ops using schedules
- Added a reference of schedule-focused examples
- Added dedicated guides for common schedule uses, including creating partitioned schedules, customizing executing timezones, testing, and troubleshooting

Dagster Plus

[experimental] The backfill daemon can now store logs and display them in the UI for increased visibility into the daemon’s behavior. Please contact Dagster Labs if you are interested in piloting this experimental feature.
Added a --read-only flag to the dagster-cloud ci branch-deployment CLI command, which returns the current branch deployment name for the current code repository branch without update the status of the branch deployment.

1.7.9 (core) / 0.23.9 (libraries)

New

Dagster will now display a “storage kind” tag on assets in the UI, similar to the existing compute kind. To set storage kind for an asset, set its dagster/storage_kind tag.
You can now set retry policy on dbt assets, to enable coarse-grained retries with delay and jitter. For fine-grained partial retries, we still recommend invoking dbt retry within a try/except block to avoid unnecessary, duplicate work.
AssetExecutionContext now exposes a has_partition_key_range property.
The owners, metadata, tags, and deps properties on AssetSpec are no longer Optional. The AssetSpec constructor still accepts None values, which are coerced to empty collections of the relevant type.
The docker_executor and k8s_job_executor now consider at most 1000 events at a time when loading events from the current run to determine which steps should be launched. This value can be tuned by setting the DAGSTER_EXECUTOR_POP_EVENTS_LIMIT environment variable in the run process.
Added a dagster/retry_on_asset_or_op_failure tag that can be added to jobs to override run retry behavior for runs of specific jobs. See the docs for more information.
Improved the sensor produced by build_sensor_for_freshness_checks to describe when/why it skips evaluating freshness checks.
A new “Runs” tab on the backfill details page allows you to see list and timeline views of the runs launched by the backfill.
[dagster-dbt] dbt will now attach relation identifier metadata to asset materializations to indicate where the built model is materialized to.
[dagster-graphql] The GraphQL Python client will now include the HTTP error code in the exception when a query fails. Thanks @yuvalgimmunai!

Bugfixes

Fixed sensor logging behavior with the @multi_asset_sensor.
ScheduleDefinition now properly supports being passed a RunConfig object.
When an asset function returns a MaterializeResult, but the function has no type annotation, previously, the IO manager would still be invoked with a None value. Now, the IO manager is not invoked.
The AssetSpec constructor now raises an error if an invalid owner string is passed to it.
When using the graph_multi_asset decorator, the code_version property on AssetOuts passed in used to be ignored. Now, they no longer are.
[dagster-deltalake] Fixed GcsConfig import error and type error for partitioned assets (Thanks @thmswt)
The asset graph and asset catalog now show the materialization status of External assets (when manually reported) rather than showing “Never observed”

Documentation

The External Assets REST APIs now have their own reference page
Added details, updated copy, and improved formatting to External Assets REST APIs

Dagster Plus

The ability to set a custom base deployment when creating a branch deployment has been enabled for all organizations.
When a code location fails to deploy, the Kubernetes agent now includes additional any warning messages from the underlying replicaset in the failure message to aid with troubleshooting.
Serverless deployments now support using a requirements.txt with hashes.
Fixed an issue where the dagster-cloud job launch command did not support specifying asset keys with prefixes in the --asset-key argument.
[catalog UI] Catalog search now allows filtering by type, i.e. group:, code location:, tag:, owner:.
New dagster+ accounts will now start with two default alert policies; one to alert if the default free credit budget for your plan is exceeded, and one to alert if a single run goes over 24 hours. These alerts will be sent as emails to the email with which the account was initially created.

1.7.8 (core) / 0.23.8 (libraries)

New

Backfills created via GQL can have a custom title and description.
Definitions now has a get_all_asset_specs method, which allows iterating over properties of the defined assets
[ui] In filter dropdowns, it’s now possible to submit before all the suggestions have been loaded (thanks @bmalehorn!)
[ui] Performance improvements when loading the Dagster UI for asset graphs with thousands of partition keys.
[dagster-dbt] Dbt asset checks now emit execution duration and the number of failing rows as metadata
[dagster-embedded-elt] Added support for partitioning in dlt assets (thanks @edsoncezar16!)
[dagster-embedded-elt] Added ability to set custom metadata on dlt assets (thanks @edsoncezar16!)
[dagster-graphql] Added a terminate_runs method to the Python GraphQL Client. (thanks @baumann-t!)
[dagster-polars] dagster-polars IO managers now emit dagster/row_count metadata (thanks @danielgafni!)
[dagster-dbt] DbtCliInvocation now has a .get_error() method that can be useful when using dbt.cli(..., raise_on_error=False).

Bugfixes

Fix a bug with legacy DynamicPartitionsDefinition (using partitions_fn) that caused a crash during job backfills.
[ui] On the asset graph, filtering to one or more code locations via the Filter dropdown now works as expected.
[ui] On the asset overview page, viewing an asset with no definition in a loaded code location no longer renders a clipped empty state.

Experimental

The new build_metadata_bounds_checks API creates asset checks which verify that numeric metadata values on asset materializations fall within min or max values. See the documentation for more information.

Documentation

Added details and links to the Schedules and Sensors API documentation
Removed leftover mention of Dagster Cloud from the Dagster+ Hybrid architecture documentation

Dagster Plus

Fixed an incompatibility between build_sensor_for_freshness_checks and Dagster Plus. This API should now work when used with Dagster Plus.
[ui] Billing / usage charts no longer appear black-on-black in Dagster’s dark mode.
[ui] The asset catalog is now available for teams plans.
[ui] Fixed a bug where the alert policy editor would misinterpret the threshold on a long-running job alert.
[kubernetes] Added a dagsterCloudAgent.additionalPodSpecConfig to the Kubernetes agent Helm chart allowing arbitrary pod configuration to be applied to the agent pod.
[ECS] Fixed an issue where the ECS agent would sometimes raise a “Too many concurrent attempts to create a new revision of the specified family” exception when using agent replicas.

1.7.7 (core) / 0.23.7 (libraries)

New

[ui] Command clicking on nodes in the asset lineage tab will now open them in a separate tab. Same with external asset links in the asset graph.
Added support for setting a custom job namespace in user code deployments. (thanks @tmatthews0020!)
Removed warnings due to use of datetime.utcfromtimestamp (thanks @dbrtly!)
Custom smtp user can now be used for e-mail alerts (thanks @edsoncezar16!)
[dagster-dbt] Added support for dbt-core==1.8.*.
[dagster-embedded-elt] Failed dlt pipelines are now accurately reflected on the asset materialization (thanks @edsoncezar16!)

Bugfixes

Fixed spurious errors in logs due to module shadowing.
Fixed an issue in the Backfill Daemon where if the assets to be materialized had different BackfillPolicys, each asset would get materialized in its own run, rather than grouping assets together into single run.
Fixed an issue that could cause the Asset Daemon to lose information in its cursor about an asset if that asset’s code location was temporarily unavailable.
[dagster-dbt] Mitigated issues with cli length limits by only listing specific dbt tests as needed when the tests aren’t included via indirect selection, rather than listing all tests.

Documentation

Markdoc tags can now be used in place of MDX components (thanks @nikomancy)

1.7.6 (core) / 0.23.6 (libraries)

New

The backfill daemon now has additional logging to document the progression through each tick and why assets are and are not materialized during each evaluation of a backfill.
Made performance improvements in both calculating and storing data version for assets, especially for assets with a large fan-in.
Standardized table row count metadata output by various integrations to dagster/row_count .
[dagster-aws][community-contribution] Additional parameters can now be passed to the following resources: CloudwatchLogsHandler, ECRPublicClient, SecretsManagerResource, SSMResource thanks @jacob-white-simplisafe !
Added additional frontend telemetry. See https://docs.dagster.io/about/telemetry for more information.

Bugfixes

Fixed issue that could cause runs to fail if they targeted any assets which had a metadata value of type TableMetadataValue, TableSchemaMetadataValue, or TableColumnLineageMetadataValue defined.
Fixed an issue which could cause evaluations produced via the Auto-materialize system to not render the “skip”-type rules.
Backfills of asset jobs now correctly use the BackfillPolicy of the underlying assets in the job.
[dagster-databricks][community-contribution] databricks-sdk version bumped to 0.17.0, thanks @lamalex !
[helm][community-contribution] resolved incorrect comments about dagster code-server start , thanks @SanjaySiddharth !

Documentation

Added section headings to Pipes API references, along with explanatory copy and links to relevant pages
Added a guide for subletting asset checks
Add more detailed steps to transition from serverless to hybrid
[community-contribution] asset selection syntax corrected, thanks @JonathanLai2004!

Dagster Plus

Fixed an issue where Dagster Cloud agents would wait longer than necessary when multiple code locations were timing out during a deployment.

1.7.5 (core) / 0.23.5 (libraries)

New

The Asset > Checks tab now allows you to view plots of numeric metadata emitted by your checks.
The Asset > Events tab now supports infinite-scrolling, making it possible to view all historical materialization and observation events.
When constructing a MaterializeResult, ObserveResult, or Output, you can now include tags that will be attached to the corresponding AssetMaterialization or AssetObservation event. These tags will be rendered on these events in the UI.

Bugfixes

Fixed an issue where backfills would sometimes fail if a partition definition was changed in the middle of the backfill.
Fixed an issue where if the code server became unavailable during the first tick of a backfill, the backfill would stall and be unable to submit runs once the code server became available.
Fixed an issue where the status of an external asset would not get updated correctly.
Fixed an issue where run status sensors would sometimes fall behind in deployments with large numbers of runs.
The descriptions and metadata on the experimental build_last_update_freshness_checks and build_time_partition_freshness_checks APIs have been updated to be clearer.
The headers of tables no longer become misaligned when a scrollbar is present in some scenarios.
The sensor type, instigation type, and backfill status filters on their respective pages are now saved to the URL, so sharing the view or reloading the page preserve your filters.
Typing a % into the asset graph’s query selector no longer crashes the UI.
“Materializing” states on the asset graph animate properly in both light and dark themes.
Thanks to @lautaro79 for fixing a helm chart issue.

Breaking Changes

Subclasses of MetadataValue have been changed from NamedTuples to Pydantic models. NamedTuple functionality on these classes was not part of Dagster’s stable public API, but usages relying on their tuple-ness may break. For example: calling json.dumps on collections that include them.

Deprecations

[dagster-dbt] Support for dbt-core==1.5.* has been removed, as it has reached end of life in April 2024.

Dagster Plus

Fixed an issue in the dagster-cloud CLI where the --deployment argument was ignored when the DAGSTER_CLOUD_URL environment variable was set.
Fixed an issue where dagster-cloud-cli package wouldn’t work unless the dagster-cloud package was installed as well.
A new “budget alerts” feature has launched for users on self-serve plans. This feature will alert you when you hit your credit limit.
The experimental asset health overview now allows you to group assets by compute kind, tag, and tag value.
The concurrency and locations pages in settings correctly show Dagster Plus-specific options when experimental navigation is enabled.

1.7.4 (core) / 0.23.4 (libraries)

New

TimeWindowPartitionMapping now supports the start_offset and end_offset parameters even when the upstream PartitionsDefinition is different than the downstream PartitionsDefinition. The offset is expressed in units of downstream partitions, so TimeWindowPartitionMapping(start_offset=-1) between an hourly upstream and a daily downstream would map each downstream partition to 48 upstream partitions – those for the same and preceding day.

Bugfixes

Fixed an issue where certain exceptions in the Dagster daemon would immediately retry instead of waiting for a fixed interval before retrying.
Fixed a bug with asset checks in complex asset graphs that include cycles in the underlying nodes.
Fixed an issue that would cause unnecessary failures on FIPS-enabled systems due to the use of md5 hashes in non-security-related contexts (thanks @jlloyd-widen!)
Removed path metadata from UPathIOManager inputs. This eliminates the creation of ASSET_OBSERVATION events for every input on every step for the default I/O manager.
Added support for defining owners on @graph_asset.
Fixed an issue where having multiple partitions definitions in a location with the same start date but differing end dates could lead to “DagsterInvalidSubsetError when trying to launch runs.

Documentation

Fixed a few issues with broken pages as a result of the Dagster+ rename.
Renamed a few instances of Dagster Cloud to Dagster+.
Added a note about external asset + alert incompatibility to the Dagster+ alerting docs.
Fixed references to outdated apis in freshness checks docs.

Dagster Plus

When creating a Branch Deployment via GraphQL or the dagster-cloud branch-deployment CLI, you can now specify the base deployment. The base deployment will be used for comparing assets for Change Tracking. For example, to set the base deployment to a deployment named staging: dagster-cloud branch-deployment create-or-update --base-deployment-name staging .... Note that once a Branch Deployment is created, the base deployment cannot be changed.
Fixed an issue where agents serving many branch deployments simultaneously would sometimes raise a 413: Request Entity Too Large error when uploading a heartbeat to the Dagster Plus servers.

1.7.3 (core) / 0.23.3 (libraries)

New

@graph_asset now accepts a tags argument
[ui] For users whose light/dark mode theme setting is set to match their system setting, the theme will update automatically when the system changes modes (e.g. based on time of day), with no page reload required.
[ui] We have introduced the typefaces Geist and Geist Mono as our new default fonts throughout the Dagster app, with the goal of improving legibility, consistency, and maintainability.
[ui] [experimental] We have begun experimenting with a new navigation structure for the Dagster UI. The change can be enabled via User Settings.
[ui] [experimental] Made performance improvements to the Concurrency settings page.
[dagster-azure] [community-contribution] ADLS2 IOManager supports custom timeout. Thanks @tomas-gajarsky!
[dagster-fivetran] [community-contribution] It’s now possible to specify destination ids in load_asset_defs_from_fivetran_instance. Thanks @lamalex!

Bugfixes

Fixed an issue where pressing the “Reset sensor status” button in the UI would also reset the sensor’s cursor.
Fixed a bug that caused input loading time not to be included in the reported step duration.
Pydantic warnings are no longer raised when importing Dagster with Pydantic 2.0+.
Fixed an issue which would cause incorrect behavior when auto-materializing partitioned assets based on updates to a parent asset in a different code location.
Fixed an issue which would cause every tick of the auto-materialize sensor to produce an evaluation for each asset, even if nothing had changed from the previous tick.
[dagster-dbt] Fixed a bug that could raise Duplicate check specs errors with singular tests ingested as asset checks.
[embedded-elt] resolved an issue where subset of resources were not recognized when using source.with_resources(...)
[ui] Fixed an issue where a sensor that targeted an invalid set of asset keys could cause the asset catalog to fail to load.
[ui] Fixed an issue in which runs in the Timeline that should have been considered overlapping were not correctly grouped together, leading to visual bugs.
[ui] On the asset overview page, job tags no longer render poorly when an asset appears in several jobs.
[ui] On the asset overview page, hovering over the timestamp tags in the metadata table explains where each entry originated.
[ui] Right clicking the background of the asset graph now consistently shows a context menu, and the lineage view supports vertical as well as horizontal layout.

Documentation

Sidebar navigation now appropriately handles command-click and middle-click to open links in a new tab.
Added a section for asset checks to the Testing guide.
Added a guide about Column-level lineage for assets.
Lots of updates to examples to reflect the new opt-in approach to I/O managers.

Dagster+

[ui] [experimental] A new Overview > Asset Health page provides visibility into failed and missing materializations, check warnings and check errors.
[ui] You can now share feedback with the Dagster team directly from the app. Open the Help menu in the top nav, then “Share feedback”. Bugs and feature requests are submitted directly to the Dagster team.
[ui] When editing a team, the list of team members is now virtualized, allowing for the UI to scale better for very large team sizes.
[ui] Fixed dark mode for billing components.

1.7.2 (core) / 0.23.2 (libraries)

New

Performance improvements when loading large asset graphs in the Dagster UI.
@asset_check functions can now be invoked directly for unit testing.
dagster-embedded-elt dlt resource DagsterDltResource can now be used from @op definitions in addition to assets.
UPathIOManager.load_partitions has been added to assist with helping UpathIOManager subclasses deal with serialization formats which support partitioning. Thanks @danielgafni!
[dagster-polars] now supports other data types rather than only string for the partitioning columns. Also PolarsDeltaIOManager now supports MultiPartitionsDefinition with DeltaLake native partitioning. Metadata value "partition_by": {"dim_1": "col_1", "dim_2": "col_2"} should be specified to enable this feature. Thanks @danielgafni!

Bugfixes

[dagster-airbyte] Auto materialization policies passed to load_assets_from_airbyte_instance and load_assets_from_airbyte_project will now be properly propagated to the created assets.
Fixed an issue where deleting a run that was intended to materialize a partitioned asset would sometimes leave the status of that asset as “Materializing” in the Dagster UI.
Fixed an issue with build_time_partition_freshness_checks where it would incorrectly intuit that an asset was not fresh in certain cases.
[dagster-k8s] Fix an error on transient ‘none’ responses for pod waiting reasons. Thanks @piotrmarczydlo!
[dagster-dbt] Failing to build column schema metadata will now result in a warning rather than an error.
Fixed an issue where incorrect asset keys would cause a backfill to fail loudly.
Fixed an issue where syncing unmaterialized assets could include source assets.

Breaking Changes

[dagster-polars] PolarsDeltaIOManager no longer supports loading natively partitioned DeltaLake tables as dictionaries. They should be loaded as a single pl.DataFrame/pl.LazyFrame instead.

Documentation

Renamed Dagster Cloud to Dagster+ all over the docs.
Added a page about Change Tracking in Dagster+ branch deployments.
Added a section about user-defined metrics to the Dagster+ Insights docs.
Added a section about Asset owners to the asset metadata docs.

Dagster Cloud

Branch deployments now have Change Tracking. Assets in each branch deployment will be compared to the main deployment. New assets and changes to code version, dependencies, partitions definitions, tags, and metadata will be marked in the UI of the branch deployment.
Pagerduty alerting is now supported with Pro plans. See the documentation for more info.
Asset metadata is now included in the insights metrics for jobs materializing those assets.
Per-run Insights are now available on individual assets.
Previously, the before_storage_id / after_storage_id values in the AssetRecordsFilter class were ignored. This has been fixed.
Updated the output of dagster-cloud deployment alert-policies list to match the format of sync.
Fixed an issue where Dagster Cloud agents with many code locations would sometimes leave code servers running after the agent shut down.

1.7.1 (core) / 0.23.1 (libraries)

New

[dagster-dbt][experimental] A new cli command dagster-dbt project prepare-for-deployment has been added in conjunction with DbtProject for managing the behavior of rebuilding the manifest during development and preparing a pre-built one for production.

Bugfixes

Fixed an issue with duplicate asset check keys when loading checks from a package.
A bug with the new build_last_update_freshness_checks and build_time_partition_freshness_checks has been fixed where multi_asset checks passed in would not be executable.
[dagster-dbt] Fixed some issues with building column lineage for incremental models, models with implicit column aliases, and models with columns that have multiple dependencies on the same upstream column.

Breaking Changes

[dagster-dbt] The experimental DbtArtifacts class has been replaced by DbtProject.

Documentation

Added a dedicated concept page for all things metadata and tags
Moved asset metadata content to a dedicated concept page: Asset metadata
Added section headings to the Software-defined Assets API reference, which groups APIs by asset type or use
Added a guide about user settings in the Dagster UI
Added AssetObservation to the Software-defined Assets API reference
Renamed Dagster Cloud GitHub workflow files to the new, consolidated dagster-cloud-deploy.yml
Miscellaneous formatting and copy updates
[community-contribution] [dagster-embedded-elt] Fixed get_asset_key API documentation (thanks @aksestok!)
[community-contribution] Updated Python version in contributing documentation (thanks @piotrmarczydlo!)
[community-contribution] Typo fix in README (thanks @MiConnell!)

Dagster Cloud

Fixed a bug where an incorrect value was being emitted for BigQuery bytes billed in Insights.

1.7.0 (core) / 0.23.0 (libraries)

Major Changes since 1.6.0 (core) / 0.22.0 (libraries)

Asset definitions can now have tags, via the tags argument on @asset, AssetSpec, and AssetOut. Tags are meant to be used for organizing, filtering, and searching for assets.
The Asset Details page has been revamped to include an “Overview” tab that centralizes the most important information about the asset – such as current status, description, and columns – in a single place.
Assets can now be assigned owners.
Asset checks are now considered generally available and will no longer raise experimental warnings when used.
Asset checks can now be marked blocking, which causes downstream assets in the same run to be skipped if the check fails with ERROR-level severity.
The new @multi_asset_check decorator enables defining a single op that executes multiple asset checks.
The new build_last_updated_freshness_checks and build_time_partition_freshness_checks APIs allow defining asset checks that error or warn when an asset is overdue for an update. Refer to the Freshness checks guide for more info.
The new build_column_schema_change_checks API allows defining asset checks that warn when an asset’s columns have changed since its latest materialization.
In the asset graph UI, the “Upstream data”, “Code version changed”, and “Upstream code version” statuses have been collapsed into a single “Unsynced” status. Clicking on “Unsynced” displays more detailed information.
I/O managers are now optional. This enhances flexibility for scenarios where they are not necessary. For guidance, see When to use I/O managers.
- Assets with None or MaterializeResult return type annotations won't use I/O managers; dependencies for these assets can be set using the deps parameter in the @asset decorator.
[dagster-dbt] Dagster’s dbt integration can now be configured to automatically collect metadata about column schema and column lineage.
[dagster-dbt] dbt tests are now pulled in as Dagster asset checks by default.
[dagster-dbt] dbt resource tags are now automatically pulled in as Dagster asset tags.
[dagster-snowflake] [dagster-gcp] The dagster-snowflake and dagster-gcp packages now both expose a fetch_last_updated_timestamps API, which makes it straightforward to collect data freshness information in source asset observation functions.

Changes since 1.6.14 (core) / 0.22.14 (libraries)

New

Metadata attached during asset or op execution can now be accessed in the I/O manager using OutputContext.output_metadata.
[experimental] Single-run backfills now support batched inserts of asset materialization events. This is a major performance improvement for large single-run backfills that have database writes as a bottleneck. The feature is off by default and can be enabled by setting the DAGSTER_EVENT_BATCH_SIZE environment variable in a code server to an integer (25 recommended, 50 max). It is only currently supported in Dagster Cloud and OSS deployments with a postgres backend.
[ui] The new Asset Details page is now enabled for new users by default. To turn this feature off, you can toggle the feature in the User Settings.
[ui] Queued runs now display a link to view all the potential reasons why a run might remain queued.
[ui] Starting a run status sensor with a stale cursor will now warn you in the UI that it will resume from the point that it was paused.
[asset-checks] Asset checks now support asset names that include ., which can occur when checks are ingested from dbt tests.
[dagster-dbt] The env var DBT_INDIRECT_SELECTION will no longer be set to empty when executing dbt tests as asset checks, unless specific asset checks are excluded. dagster-dbt will no longer explicitly select all dbt tests with the dbt cli, which had caused argument length issues.
[dagster-dbt] Singular tests with a single dependency are now ingested as asset checks.
[dagster-dbt] Singular tests with multiple dependencies must have the primary dependency must be specified using dbt meta.

{{
    config(
        meta={
            'dagster': {
                'ref': {
                    'name': <ref_name>,
                    'package': ... # Optional, if included in the ref.
                    'version': ... # Optional, if included in the ref.
                },
            }
        }
    )
}}

...

[dagster-dbt] Column lineage metadata can now be emitted when invoking dbt. See the documentation for details.
[experimental][dagster-embedded-elt] Add the data load tool (dlt) integration for easily building and integration dlt ingestion pipelines with Dagster.
[dagster-dbt][community-contribution] You can now specify a custom schedule name for schedules created with build_schedule_from_dbt_selection. Thanks @dragos-pop!
[helm][community-contribution] You can now specify a custom job namespace for your user code deployments. Thanks @tmatthews0020!
[dagster-polars][community-contribution] Column schema metadata is now integrated using the dagster-specific metadata key in dagster_polars. Thanks @danielgafni!
[dagster-datadog][community-contribution] Added datadog.api module to the DatadogClient resource, enabling direct access to API methods. Thanks @shivgupta!

Bugfixes

Fixed a bug where run status sensors configured to monitor a specific job would trigger for jobs with the same name in other code locations.
Fixed a bug where multi-line asset check result descriptions were collapsed into a single line.
Fixed a bug that caused a value to show up under “Target materialization” in the asset check UI even when an asset had had observations but never been materialized.
Changed typehint of metadata argument on multi_asset and AssetSpec to Mapping[str, Any].
[dagster-snowflake-pandas] Fixed a bug introduced in 0.22.4 where column names were not using quote identifiers correctly. Column names will now be quoted.
[dagster-aws] Fixed an issue where a race condition where simultaneously materializing the same asset more than once would sometimes raise an Exception when using the s3_io_manager.
[ui] Fixed a bug where resizable panels could inadvertently be hidden and never recovered, for instance the right panel on the global asset graph.
[ui] Fixed a bug where opening a run with an op selection in the Launchpad could lose the op selection setting for the subsequently launched run. The op selection is now correctly preserved.
[community-contribution] Fixed dagster-polars tests by excluding Decimal types. Thanks @ion-elgreco!
[community-contribution] Fixed a bug where auto-materialize rule evaluation would error on FIPS-compliant machines. Thanks @jlloyd-widen!
[community-contribution] Fixed an issue where an excessive DeprecationWarning was being issued for a ScheduleDefinition passed into the Definitions object. Thanks @2Ryan09!

Breaking Changes

Creating a run with a custom non-UUID run_id was previously private and only used for testing. It will now raise an exception.
[community-contribution] Previously, calling get_partition_keys_in_range on a MultiPartitionsDefinition would erroneously return partition keys that were within the one-dimensional range of alphabetically-sorted partition keys for the definition. Now, this method returns the cartesian product of partition keys within each dimension’s range. Thanks, @mst!
Added AssetCheckExecutionContext to replace AssetExecutionContext as the type of the context param passed in to @asset_check functions. @asset_check was an experimental decorator.
[experimental] @classmethod decorators have been removed from dagster-embedded-slt.sling DagsterSlingTranslator
[dagster-dbt] @classmethod decorators have been removed from DagsterDbtTranslator.
[dagster-k8s] The default merge behavior when raw kubernetes config is supplied at multiple scopes (for example, at the instance level and for a particluar job) has been changed to be more consistent. Previously, configuration was merged shallowly by default, with fields replacing other fields instead of appending or merging. Now, it is merged deeply by default, with lists appended to each other and dictionaries merged, in order to be more consistent with how kubernetes configuration is combined in all other places. See the docs for more information, including how to restore the previous default merge behavior.

Deprecations

AssetSelection.keys() has been deprecated. Instead, you can now supply asset key arguments to AssetSelection.assets() .
Run tag keys with long lengths and certain characters are now deprecated. For consistency with asset tags, run tags keys are expected to only contain alpha-numeric characters, dashes, underscores, and periods. Run tag keys can also contain a prefix section, separated with a slash. The main section and prefix section of a run tag are limited to 63 characters.
AssetExecutionContext has been simplified. Op-related methods and methods with existing access paths have been marked deprecated. For a full list of deprecated methods see this GitHub Discussion.
The metadata property on InputContext and OutputContext has been deprecated and renamed to definition_metadata .
FreshnessPolicy is now deprecated. For monitoring freshness, use freshness checks instead. If you are using AutoMaterializePolicy.lazy(), FreshnessPolicy is still recommended, and will continue to be supported until an alternative is provided.

Documentation

Lots of updates to examples to reflect the recent opt-in nature of I/O managers
Dagster Cloud alert guides have been split up by alert type:
Added info about asset check-based-alerts to the Dagster Cloud alerting docs
The Asset checks documentation got a face lift - info about defining and executing asset checks now lives in its own guide
Added a new guide for using freshness checks to the Asset checks documentation
Cleaned up the Getting help guide - it now includes a high-level summary of all Dagster support resources, making it easier to skim!
[community-contribution] Fixed the indentation level of a code snippet in the dagster-polars documentation. Thanks @danielgafni!

Dagster Cloud

The Dagster Cloud agent will now monitor the code servers that it spins to detect whether they have stopped serving requests, and will automatically redeploy the code server if it has stopped responding for an extended period of time.
New additions and bugfixes in Insights:
- Added per-metric cost estimation. Estimates can be added via the “Insights settings” button, and will appear in the table and chart for that metric.
- Branch deployments are now included in the deployment filter control.
- In the Deployments view, fixed deployment links in the data table.
- Added support for BigQuery cost metrics.

1.6.14 (core) / 0.22.14 (libraries)

Bugfixes

[dagster-dbt] Fixed some issues with building column lineage metadata.

1.6.13 (core) / 0.22.13 (libraries)

Bugfixes

Fixed a bug where an asset with a dependency on a subset of the keys of a parent multi-asset could sometimes crash asset job construction.
Fixed a bug where a Definitions object containing assets having integrated asset checks and multiple partitions definitions could not be loaded.

1.6.12 (core) / 0.22.12 (libraries)

New

AssetCheckResult now has a text description property. Check evaluation descriptions are shown in the Checks tab on the asset details page.
Introduced TimestampMetadataValue. Timestamp metadata values are represented internally as seconds since the Unix epoch. They can be constructed using MetadataValue.timestamp. In the UI, they’re rendered in the local timezone, like other timestamps in the UI.
AssetSelection.checks can now accept AssetCheckKeys as well as AssetChecksDefinition.
[community-contribution] Metadata attached to an output at runtime (via either add_output_metadata or by passing to Output) is now available on HookContext under the op_output_metadata property. Thanks @JYoussouf!
[experimental] @asset, AssetSpec, and AssetOut now accept a tags property. Tags are key-value pairs meant to be used for organizing asset definitions. If "__dagster_no_value" is set as the value, only the key will be rendered in the UI. AssetSelection.tag allows selecting assets that have a particular tag.
[experimental] Asset tags can be used in asset CLI selections, e.g. dagster asset materialize --select tag:department=marketing
[experimental][dagster-dbt] Tags can now be configured on dbt assets, using DagsterDbtTranslator.get_tags. By default, we take the dbt tags configured on your dbt models, seeds, and snapshots.
[dagster-gcp] Added get_gcs_keys sensor helper function.

Bugfixes

Fixed a bug that prevented external assets with dependencies from displaying properly in Dagster UI.
Fix a performance regression in loading code locations with large multi-assets.
[community-contribution] [dagster-databricks] Fix a bug with the DatabricksJobRunner that led to an inability to use dagster-databricks with Databricks instance pools. Thanks @smats0n!
[community-contribution] Fixed a bug that caused a crash when external assets had hyphens in their AssetKey. Thanks @maxfirman!
[community-contribution] Fix a bug with load_assets_from_package_module that would cause a crash when any submodule had the same directory name as a dependency. Thanks @CSRessel!
[community-contribution] Fixed a mypy type error, thanks @parthshyara!
[community-contribution][dagster-embedded-elt] Fixed an issue where Sling assets would not properly read group and description metadata from replication config, thanks @jvyoralek!
[community-contribution] Ensured annotations from the helm chart properly propagate to k8s run pods, thanks @maxfirman!

Dagster Cloud

Fixed an issue in Dagster Cloud Serverless runs where multiple runs simultaneously materializing the same asset would sometimes raise a “Key not found” exception.
Fixed an issue when using agent replicas where one replica would sporadically remove a code server created by another replica due to a race condition, leading to a “code server not found” or “Deployment not found” exception.
[experimental] The metadata key for specifying column schema that will be rendered prominently on the new Overview tab of the asset details page has been changed from "columns" to "dagster/column_schema". Materializations using the old metadata key will no longer result in the Columns section of the tab being filled out.
[ui] Fixed an Insights bug where loading a view filtered to a specific code location would not preserve that filter on pageload.

1.6.11 (core) / 0.22.11 (libraries)

Bugfixes

Fixed an issue where dagster dev or the Dagster UI would display an error when loading jobs created with op or asset selections.

1.6.10 (core) / 0.22.10 (libraries)

New

Latency improvements to the scheduler when running many simultaneous schedules.

Bugfixes

The performance of loading the Definitions snapshot from a code server when large @multi_asset s are in use has been drastically improved.
The snowflake quickstart example project now renames the “by” column to avoid reserved snowflake names. Thanks @jcampbell!
The existing group name (if any) for an asset is now retained if the_asset.with_attributes is called without providing a group name. Previously, the existing group name was erroneously dropped. Thanks @ion-elgreco!
[dagster-dbt] Fixed an issue where Dagster events could not be streamed from dbt source freshness.
[dagster university] Removed redundant use of MetadataValue in Essentials course. Thanks @stianthaulow!
[ui] Increased the max number of plots on the asset plots page to 100.

Breaking Changes

The tag_keys argument on DagsterInstance.get_run_tagsis no longer optional. This has been done to remove an easy way of accidentally executing an extremely expensive database operation.

Dagster Cloud

The maximum number of concurrent runs across all branch deployments is now configurable. This setting can now be set via GraphQL or the CLI.
[ui] In Insights, fixed display of table rows with zero change in value from the previous time period.
[ui] Added deployment-level Insights.
[ui] Fixed an issue causing void invoices to show up as “overdue” on the billing page.
[experimental] Branch deployments can now indicate the new and modified assets in the branch deployment as compared to the main deployment. To enable this feature, turn on the “Enable experimental branch deployment asset graph diffing” user setting.

1.6.9 (core) / 0.22.9 (libraries)

New

[ui] When viewing logs for a run, the date for a single log row is now shown in the tooltip on the timestamp. This helps when viewing a run that takes place over more than one date.
Added suggestions to the error message when selecting asset keys that do not exist as an upstream asset or in an AssetSelection.
Improved error messages when trying to materialize a subset of a multi-asset which cannot be subset.
[dagster-snowflake] dagster-snowflake now requires snowflake-connector-python>=3.4.0
[embedded-elt] @sling_assets accepts an optional name parameter for the underlying op
[dagster-openai] dagster-openai library is now available.
[dagster-dbt] Added a new setting on DagsterDbtTranslatorSettings called enable_duplicate_source_asset_keys that allows users to set duplicate asset keys for their dbt sources. Thanks @hello-world-bfree!
Log messages in the Dagster daemon for unloadable sensors and schedules have been removed.
[ui] Search now uses a cache that persists across pageloads which should greatly improve search performance for very large orgs.
[ui] groups/code locations in the asset graph’s sidebar are now sorted alphabetically.

Bugfixes

Fixed issue where the input/output schemas of configurable IOManagers could be ignored when providing explicit input / output run config.
Fixed an issue where enum values could not properly have a default value set in a ConfigurableResource.
Fixed an issue where graph-backed assets would sometimes lose user-provided descriptions due to a bug in internal copying.
[auto-materialize] Fixed an issue introduced in 1.6.7 where updates to ExternalAssets would be ignored when using AutoMaterializePolicies which depended on parent updates.
[asset checks] Fixed a bug with asset checks in step launchers.
[embedded-elt] Fix a bug when creating a SlingConnectionResource where a blank keyword argument would be emitted as an environment variable
[dagster-dbt] Fixed a bug where emitting events from dbt source freshness would cause an error.
[ui] Fixed a bug where using the “Terminate all runs” button with filters selected would not apply the filters to the action.
[ui] Fixed an issue where typing a search query into the search box before the search data was fetched would yield “No results” even after the data was fetched.

Community Contributions

[docs] fixed typo in embedded-elt.mdx (thanks @cameronmartin)!
[dagster-databricks] log the url for the run of a databricks job (thanks @smats0n)!
Fix missing partition property (thanks christeefy)!
Add op_tags to @observable_source_asset decorator (thanks @maxfirman)!
[docs] typo in MultiPartitionMapping docs (thanks @dschafer)
Allow github actions to checkout branch from forked repo for docs changes (ci fix) (thanks hainenber)!

Experimental

[asset checks] UI performance of asset checks related pages has been improved.
[dagster-dbt] The class DbtArtifacts has been added for managing the behavior of rebuilding the manifest during development but expecting a pre-built one in production.

Documentation

Added example of writing compute logs to AWS S3 when customizing agent configuration.
"Hello, Dagster" is now "Dagster Quickstart" with the option to use a Github Codespace to explore Dagster.
Improved guides and reference to better running multiple isolated agents with separate queues on ECS.

Dagster Cloud

Microsoft Teams is now supported for alerts. Documentation
A send sample alert button now exists on both the alert policies page and in the alert policies editor to make it easier to debug and configure alerts without having to wait for an event to kick them off.

1.6.8 (core) / 0.22.8 (libraries)

Bugfixes

[dagster-embedded-elt] Fixed a bug in the SlingConnectionResource that raised an error when connecting to a database.

Experimental

[asset checks] graph_multi_assets with check_specs now support subsetting.

1.6.7 (core) / 0.22.7 (libraries)

New

Added a new run_retries.retry_on_op_or_asset_failures setting that can be set to false to make run retries only occur when there is an unexpected failure that crashes the run, allowing run-level retries to co-exist more naturally with op or asset retries. See the docs for more information.
dagster dev now sets the environment variable DAGSTER_IS_DEV_CLI allowing subprocesses to know that they were launched in a development context.
[ui] The Asset Checks page has been updated to show more information on the page itself rather than in a dialog.

Bugfixes

[ui] Fixed an issue where the UI disallowed creating a dynamic partition if its name contained the “|” pipe character.
AssetSpec previously dropped the metadata and code_version fields, resulting in them not being attached to the corresponding asset. This has been fixed.

Experimental

The new @multi_observable_source_asset decorator enables defining a set of assets that can be observed together with the same function.
[dagster-embedded-elt] New Asset Decorator @sling_assets and Resource SlingConnectionResource have been added for the [dagster-embedded-elt.sling](http://dagster-embedded-elt.sling) package. Deprecated build_sling_asset, SlingSourceConnection and SlingTargetConnection.
Added support for op-concurrency aware run dequeuing for the QueuedRunCoordinator.

Documentation

Fixed reference documentation for isolated agents in ECS.
Corrected an example in the Airbyte Cloud documentation.
Added API links to OSS Helm deployment guide.
Fixed in-line pragmas showing up in the documentation.

Dagster Cloud

Alerts now support Microsoft Teams.
[ECS] Fixed an issue where code locations could be left undeleted.
[ECS] ECS agents now support setting multiple replicas per code server.
[Insights] You can now toggle the visibility of a row in the chart by clicking on the dot for the row in the table.
[Users] Added a new column “Licensed role” that shows the user's most permissive role.

1.6.6 (core) / 0.22.6 (libraries)

New

Dagster officially supports Python 3.12.
dagster-polars has been added as an integration. Thanks @danielgafni!
[dagster-dbt] @dbt_assets now supports loading projects with semantic models.
[dagster-dbt] @dbt_assets now supports loading projects with model versions.
[dagster-dbt] get_asset_key_for_model now supports retrieving asset keys for seeds and snapshots. Thanks @aksestok!
[dagster-duckdb] The Dagster DuckDB integration supports DuckDB version 0.10.0.
[UPath I/O manager] If a non-partitioned asset is updated to have partitions, the file containing the non-partitioned asset data will be deleted when the partitioned asset is materialized, rather than raising an error.

Bugfixes

Fixed an issue where creating a backfill of assets with dynamic partitions and a backfill policy would sometimes fail with an exception.
Fixed an issue with the type annotations on the @asset decorator causing a false positive in Pyright strict mode. Thanks @tylershunt!
[ui] On the asset graph, nodes are slightly wider allowing more text to be displayed, and group names are no longer truncated.
[ui] Fixed an issue where the groups in the asset graph would not update after an asset was switched between groups.
[dagster-k8s] Fixed an issue where setting the security_context field on the k8s_job_executor didn't correctly set the security context on the launched step pods. Thanks @krgn!

Experimental

Observable source assets can now yield ObserveResults with no data_version.
You can now include FreshnessPolicys on observable source assets. These assets will be considered “Overdue” when the latest value for the “dagster/data_time” metadata value is older than what’s allowed by the freshness policy.
[ui] In Dagster Cloud, a new feature flag allows you to enable an overhauled asset overview page with a high-level stakeholder view of the asset’s health, properties, and column schema.

Documentation

Updated docs to reflect newly-added support for Python 3.12.

Dagster Cloud

[kubernetes] Fixed an issue where the Kubernetes agent would sometimes leave dangling kubernetes services if the agent was interrupted during the middle of being terminated.

1.6.5 (core) / 0.22.5 (libraries)

New

Within a backfill or within auto-materialize, when submitting runs for partitions of the same assets, runs are now submitted in lexicographical order of partition key, instead of in an unpredictable order.
[dagster-k8s] Include k8s pod debug info in run worker failure messages.
[dagster-dbt] Events emitted by DbtCliResource now include metadata from the dbt adapter response. This includes fields like rows_affected, query_id from the Snowflake adapter, or bytes_processed from the BigQuery adapter.

Bugfixes

A previous change prevented asset backfills from grouping multiple assets into the same run when using BackfillPolicies under certain conditions. While the backfills would still execute in the proper order, this could lead to more individual runs than necessary. This has been fixed.
[dagster-k8s] Fixed an issue introduced in the 1.6.4 release where upgrading the Helm chart without upgrading the Dagster version used by user code caused failures in jobs using the k8s_job_executor.
[instigator-tick-logs] Fixed an issue where invoking context.log.exception in a sensor or schedule did not properly capture exception information.
[asset-checks] Fixed an issue where additional dependencies for dbt tests modeled as Dagster asset checks were not properly being deduplicated.
[dagster-dbt] Fixed an issue where dbt model, seed, or snapshot names with periods were not supported.

Experimental

@observable_source_asset-decorated functions can now return an ObserveResult. This allows including metadata on the observation, in addition to a data version. This is currently only supported for non-partitioned assets.
[auto-materialize] A new AutoMaterializeRule.skip_on_not_all_parents_updated_since_cron class allows you to construct AutoMaterializePolicys which wait for all parents to be updated after the latest tick of a given cron schedule.
[Global op/asset concurrency] Ops and assets now take run priority into account when claiming global op/asset concurrency slots.

Documentation

Fixed an error in our asset checks docs. Thanks @vaharoni!
Fixed an error in our Dagster Pipes Kubernetes docs. Thanks @cameronmartin!
Fixed an issue on the Hello Dagster! guide that prevented it from loading.
Add specific capabilities of the Airflow integration to the Airflow integration page.
Re-arranged sections in the I/O manager concept page to make info about using I/O versus resources more prominent.

1.6.4 (core) / 0.22.4 (libraries)

New

build_schedule_from_partitioned_job now supports creating a schedule from a static-partitioned job (Thanks @craustin!)
[dagster-pipes] PipesK8sClient will now autodetect the namespace when using in-cluster config. (Thanks @aignas!)
[dagster-pipes] PipesK8sClient can now inject the context in to multiple containers. (Thanks @aignas!)
[dagster-snowflake] The Snowflake Pandas I/O manager now uses the write_pandas method to load Pandas DataFrames in Snowflake. To support this change, the database connector was switched from SqlDbConnection to SnowflakeConnection .
[ui] On the overview sensors page you can now filter sensors by type.
[dagster-deltalake-polars] Added LazyFrame support (Thanks @ion-elgreco!)
[dagster-dbt] When using @dbt_assets and multiple dbt resources produce the same AssetKey, we now display an exception message that highlights the file paths of the misconfigured dbt resources in your dbt project.
[dagster-k8s] The debug info reported upon failure has been improved to include additional information from the Job. (Thanks @jblawatt!)
[dagster-k8s] Changed the Dagster Helm chart to apply automountServiceAccountToken: false to the default service account used by the Helm chart, in order to better comply with security policies. (Thanks @MattyKuzyk!)

Bugfixes

A unnecessary thread lock has been removed from the sensor daemon. This should improve sensor throughput for users with many sensors who have enabled threading.
Retry from failure behavior has been improved for cases where dynamic steps were interrupted.
Previously, when backfilling a set of assets which shared a BackfillPolicy and PartitionsDefinition, but had a non-default partition mapping between them, a run for the downstream asset could be launched at the same time as a separate run for the upstream asset, resulting in inconsistent partition ordering. Now, the downstream asset will only execute after the parents complete. (Thanks @ruizh22!)
Previously, asset backfills would raise an exception if the code server became unreachable mid-iteration. Now, the backfill will pause until the next evaluation.
Fixed a bug that was causing ranged backfills over dynamically partitioned assets to fail.
[dagster-pipes] PipesK8sClient has improved handling for init containers and additional containers. (Thanks @aignas!)
Fixed the last_sensor_start_time property of the SensorEvaluationContext, which would get cleared on ticks after the first tick after the sensor starts.
[dagster-mysql] Fixed the optional dagster instance migrate --bigint-migration, which caused some operational errors on mysql storages.
[dagster-dbt] Fixed a bug introduced in 1.6.3 that caused errors when ingesting asset checks with multiple dependencies.

Deprecations

The following methods on AssetExecutionContext have been marked deprecated, with their suggested replacements in parenthesis:
- context.op_config (context.op_execution_context.op_config)
- context.node_handle (context.op_execution_context.node_handle)
- context.op_handle (context.op_execution_context.op_handle)
- context.op (context.op_execution_context.op)
- context.get_mapping_key (context.op_execution_context.get_mapping_key)
- context.selected_output_names (context.op_execution_context.selected_output_names)
- context.dagster_run (context.run)
- context.run_id (context.run.run_id)
- context.run_config (context.run.run_config)
- context.run_tags (context.run.tags)
- context.has_tag (key in context.run.tags)
- context.get_tag (context.run.tags.get(key))
- context.get_op_execution_context (context.op_execution_context)
- context.asset_partition_key_for_output (context.partition_key)
- context.asset_partition_keys_for_output (context.partition_keys)
- context.asset_partitions_time_window_for_output (context.partition_time_window)
- context.asset_partition_key_range_for_output (context.partition_key_range)

Experimental

[asset checks] @asset_check now has a blocking parameter. When this is enabled, if the check fails with severity ERROR then any downstream assets in the same run won’t execute.

Documentation

The Branch Deployment docs have been updated to reflect support for backfills
Added Dagster’s maximum supported Python version (3.11) to Dagster University and relevant docs
Added documentation for recommended partition limits (a maximum of 25K per asset).
References to the Enterprise plan have been renamed to Pro, to reflect recent plan name changes
Added syntax example for setting environment variables in PowerShell to our dbt with Dagster tutorial
[Dagster University] Dagster Essentials to Dagster v1.6, and introduced the usage of MaterializeResult
[Dagster University] Fixed a typo in the Dagster University section on adding partitions to an asset (Thanks Brandon Peebles!)
[Dagster University] Corrected lesson where sensors are covered (Thanks onefloid!)

Dagster Cloud

Agent tokens can now be locked down to particular deployments. Agents will not be able to run any jobs scheduled for deployments that they are not permitted to access. By default, agent tokens have access to all deployments in an organization. Use the Edit button next to an agent token on the Tokens tab in Org Settings to configure permissions for a particular token. You must be an Organization Admin to edit agent token permissions.

1.6.3 (core) / 0.22.3 (libraries)

New

Added support for the 3.0 release of the pendulum library, for Python versions 3.9 and higher.
Performance improvements when starting run worker processes or step worker processes for runs in code locations with a large number of jobs.
AllPartitionMapping now supports mapping to downstream partitions, enabling asset backfills with these dependencies. Thanks @craustin!
[asset checks][experimental] @asset_check has new fields additional_deps and additional_ins to allow dependencies on assets other than the asset being checked.
[ui] Asset graph group nodes now show status counts.
- [dagster-snowflake] The Snowflake I/O Manager now has more specific error handling when a table doesn’t exist.
[ui] [experimental] A new experimental UI for the auto-materialize history of a specific asset has been added. This view can be enabled under your user settings by setting “Use new asset auto-materialize history page”.
[ui] Command clicking on an asset group will now select or deselect all assets in that group.
[dagster-k8s] Added the ability to customize resource limits for initContainers used by Dagster system components in the Dagster Helm chart. Thanks @MattyKuzyk!
[dagster-k8s] Added the ability to specify additional containers and initContainers in code locations in the Helm chart. Thanks @craustin!
[dagster-k8s] Explicitly listed the set of RBAC permissions used by the agent Helm chart role instead of using a wildcard. Thanks @easontm!
[dagster-dbt] Support for dbt-core==1.4.* is now removed because the version has reached end-of-life.

Bugfixes

Previously, calling get_partition_keys_not_in_subset on a BaseTimeWindowPartitionsSubset that targeted a partitions definition with no partitions (e.g. a future start date) would raise an error. Now, it returns an empty list.
Fixed issue which could cause invalid runs to be launched if a code location was updated during the course of an AMP evaluation.
Previously, some asset backfills raised an error when targeting multi-assets with internal asset dependencies. This has been fixed.
Previously, using the LocalComputeLogManager on Windows could result in errors relating to invalid paths. This has been resolved. Thanks @hainenber!
An outdated path in the contribution guide has been updated. Thanks @hainenber!
[ui] Previously an error was sometimes raised when attempting to create a dynamic partition within a multi-partitioned asset via the UI. This has been fixed.
[ui] The “Upstream materializations are missing” warning when launching a run has been expanded to warn about failed upstream materializations as well.
[ui] The community welcome modal now renders properly in dark mode and some elements of Asset and Op graphs have higher contrast in both themes.
[ui] Fixed dark mode colors for datepicker, error message, and op definition elements.
[ui] Pressing the arrow keys to navigate op/asset graphs while the layout is loading no longer causes errors.
[ui] Exporting asset and op graphs to SVG no longer fails when chrome extensions inject additional stylesheets into Dagster’s UI.
[ui] Dagster now defaults to UTC when the user’s default timezone cannot be identified, rather than crashing with a date formatting error.
[ui] Fixed an issue in the asset graph sidebar that caused groups to only list their first asset.
[ui] Fixed an issue where sensors runs would undercount the number of dynamic partition requests added or deleted if there were multiple requests for additions/deletions.
[docs] Fixed a typo in the “Using Dagster with Delta Lake” guide. Thanks @avriiil!
[asset checks] Fixed an issue which could cause errors when using asset checks with step launchers.
[dagster-webserver] A bug preventing WebSocket connections from establishing on python 3.11+ has been fixed.
[dagster-databricks] DatabricksJobRunner now ensures the correctdatabricks-sdk is installed. Thanks @zyd14!
[dagster-dbt] On run termination, an interrupt signal is now correctly forwarded to any in-progress dbt subprocesses.
[dagster-dbt] Descriptions for dbt tests ingested as asset checks can now be populated using the config.meta.description. Thanks @CapitanHeMo!
[dagster-dbt] Previously, the error message displayed when no dbt profiles information was found would display an incorrect path. This has been fixed. Thanks @zoltanctoth!
[dagster-k8s] PipesK8sClient can now correctly handle load_incluster_config . Thanks @aignas!

Documentation

Added a new category to Concepts: Automation. This page provides a high-level overview of the various ways Dagster allows you run data pipelines without manual intervention.
Moved several concept pages under Concepts > Automation: Schedules, Sensors, Asset Sensors, and Auto-materialize Policies.

Dagster Cloud

Fixed an issue where configuring the agent_queue key in a dagster_cloud.yaml file incorrectly failed to validate when using the dagster-cloud ci init or dagster-cloud ci check commands during CI/CD.

1.6.2 (core) / 0.22.2 (libraries)

New

The warning for unloadable sensors and schedules in the Dagster UI has now been removed.
When viewing an individual sensor or schedule, we now provide a button to reset the status of the sensor or schedule back to its default status as defined in code.

Experimental

[asset-checks] dbt asset checks now respect warn_if/ error_if severities

Dagster Cloud

Fixed a bug introduced in 1.6.0 where run status sensors did not cursor correctly when deployed on Dagster Cloud.
Schedule and sensor mutations are now tracked in the audit log.

1.6.1 (core) / 0.22.1 (libraries)

New

Added experimental functionality which hides user code errors from the Dagster UI. You may enable this functionality by setting the DAGSTER_REDACT_USER_CODE_ERRORS environment variable to 1.
[dagster-dbt] @dbt_assets now accepts a required_resource_keys argument.

Bugfixes

Fixed a bug where a run that targets no steps is launched by an asset backfill when code updates are pushed after backfill launch time.
Previously a graphQL error would be thrown on the asset backfill page if certain unpartitioned assets were changed to a partitioned assets. This has been fixed.
[ui] Show run log timestamps in the user’s preferred hour cycle (12/24h) format.
[ui] The “Export to SVG” option now works as expected in the improved asset graph UI.
[ui] On the asset graph, hovering over a collapsed group or the title bar of an expanded group highlights all edges in/out of the group.
Fixed occasional CI/CD errors when building documentation on a feature branch

Community Contributions

fix: add missing volumes and volumeMounts in job-instance-migrate.yaml. Thanks @nhuray!

Documentation

Fixed typos in the docs.

Dagster Cloud

[ui] Fix dark theme colors for billing components.
[ui] Show the number of users for each grant type (admin, editor, etc.) on the Users page.

1.6.0 (core) / 0.22.0 (libraries)

Major Changes since 1.5.0 (core) / 0.21.0 (libraries)

Core

Asset lineage graph UI revamp, to make it easier to visualize and navigate large graphs
- Lineage now flows left-to-right instead of top-to-bottom.
- You can expand and collapse asset groups in the graph.
- A new left-hand sidebar provides a list of assets, organized by asset group and code location.
- You can right-click on assets or groups to filter or materialize them.
- You can filter by compute kind.
Dark mode for the Dagster UI – By default, Dagster will match your system’s light or dark theme but you can adjust this in the user settings in the top right of the UI.
Report asset materializations from the UI – I.e. you record an asset materialization event without executing the code to materialize the asset. This is useful in cases where you overwrote data outside of Dagster, and you want Dagster to know about it and represent it in the UI. It’s also useful when you have a preexisting partitioned asset and start managing it with Dagster: you want Dagster to show the historical partitions as materialized instead of missing.
MaterializeResult, AssetSpec, and AssetDep now marked stable – These APIs, introduced in Dagster 1.5, were previously marked experimental. They offer a more straightforward way of defining assets when you don’t want to use I/O managers.
Backfill previews – When launching a backfill that covers assets with different partitions, can you now click “Preview” to see that partitions for each asset that will be covered by the backfill.
Viewing logs for a sensor or schedule tick is no longer considered experimental – previously, accessing this functionality required turning on a feature flag in user settings.
Runs triggered by a sensor or schedule link to the tick that triggered them.

dagster-pipes

AWS Lambda Pipes client –PipesLambdaClient [guide].
Report arbitrary messages between pipes processes and the orchestrating process – with report_custom_message and get_custom_messages.
Termination forwarding – ensures that external processes are terminated when an orchestration process is.

Since 1.5.14 (core) / 0.21.14 (libraries)

New

Default op/asset concurrency limits are now configurable at the deployment level, using the concurrency > default_op_concurrency_limit configuration in your dagster.yaml (OSS) or Deployment Settings page (Dagster Cloud). In OSS, this feature first requires a storage migration (e.g. dagster instance migrate).
Zero-value op/asset concurrency limits are now supported. In OSS, this feature first requires a storage migration (e.g. dagster instance migrate).
When a Nothing-typed output is returned from an asset or op, the handle_output function of the I/O manager will no longer be called. Users of most Dagster-maintained I/O managers will see no behavioral changes, but users of the In-Memory I/O manager, or custom I/O managers that store Nothing-typed outputs should reference the migration guide for more information.
[ui] The updated asset graph is no longer behind an experimental flag. The new version features a searchable left sidebar, a horizontal DAG layout, context menus and collapsible groups!

Bugfixes

Previously, if a code location was re-deployed with modified assets during an iteration of the asset daemon, empty auto-materialize runs could be produced. This has been fixed.
The CLI command dagster asset materialize will now return a non-zero exit code upon failure.
[ui] The Dagster UI now shows resource descriptions as markdown instead of plain text.
[ui] Viewing stdout/stderr logs for steps emitting hundreds of thousands of messages is much more performant and does not render the Run page unusable.
[ui] Fixed an issue where sensors with intervals that were less than 30 seconds were shown with an interval of “~30s” in the UI. The correct interval is now shown.
[dagster-graphql] Fixed an issue where the GraphQL Python client raised an unclear error if the request failed due to a permissions error.

Breaking Changes

A slight change has been made to run status sensors cursor values for Dagster instance using the default SQLite storage implementation. If you are using the default SQLite storage and you are upgrading directly from a version of dagster<1.5.1, you may see the first tick of your run status sensor skip runs that completed but were not yet registered by the sensor during your upgrade. This should not be common, but to avoid any chance of that, you may consider an interim upgrade to dagster>=1.5.1,<1.6.0 first.

Community Contributions

Fixed a typo in the docs. Thanks @tomscholz!
[dagster-pyspark] Added additional file exclude rules to the zip files created by Dagster Pyspark step launchers. Thanks @maxfirman!

Documentation

Added a high-level overview page for Logging.

Dagster Cloud

Added the ability to annotate code locations with custom agent queues, allowing you to route requests for code locations in a single deployment to different agents. For example, you can route requests for one code location to an agent running in an on-premise data center but requests for all other code locations to another agent running in the cloud. For more information, see the docs.

1.5.14 / 0.21.14 (libraries)

New

Viewing logs for a sensor or schedule tick is now a generally available feature.
- The feature flag to view sensor or schedule tick logs has been removed, as the feature is now enabled by default.
- Logs can now be viewed even when the sensor or schedule tick fails.
- The logs are now viewable in the sensor or schedule tick modal.
graph_multi_assets can now accept inputs as kwargs.
[ui] The tick timeline for schedules and sensors now defaults to showing all ticks, instead of excluding skipped ticks. The previous behavior can be enabled by unchecking the “Skipped” checkbox below the timeline view.
[ui] The updated asset graph is no longer behind an experimental flag. The new version features a searchable left sidebar, a horizontal DAG layout, context menus and collapsible groups!

Bugfixes

[ui] Fix layout and scrolling issues that arise when a global banner alert is displayed in the app.
[ui] Use a larger version of the run config dialog in the Runs list in order to maximize the amount of visible config yaml.
[ui] When a software-defined asset is removed from a code location, it will now also be removed from global search.
[ui] When selecting assets in the catalog, you can now opt to materialize only “changed and missing” items in your selection.
[ui] The “Open in Launchpad” option on asset run pages has been updated to link to the graph of assets or asset job instead of an unusable launchpad page.
[ui] Partition status dots of multi-dimensional assets no longer wrap on the Asset > Partitions page.
[asset checks] Fixed a bug that caused the resource_defs parameter of @asset_check to not be respected
[ui] Fixed an issue where schedules or sensors with the same name in two different code locations sometimes showed each others runs in the list of runs for that schedule or sensor.
[pipes] Fixed an issue with the PipesFileMessageReader that could cause a crash on Windows.
Previously, calling context.log in different threads within a single op could result in some of those log messages being dropped. This has been fixed (thanks @quantum-byte!)
[dagster-dbt] On Dagster run termination, the dbt subprocess now exits gracefully to terminate any inflight queries that are materializing models.

Breaking Changes

The file_manager property on OpExecutionContext and AssetExecutionContext has been removed. This is an ancient property that was deprecated prior to Dagster 1.0, and since then had been raising a NotImplementedError whenever invoked.

Community Contributions

Added the Hashicorp Nomad integration to the documentation’s list of community integrations. Thanks, @ThomAub!
[dagster-deltalake] Fixed an error when passing non-string valued options and extended the supported data types by the arrow type handler to support pyarrow datasets which allows for lazily loading delta tables. Thanks @roeap!

Experimental

[dagster-pipes] The subprocess and databricks clients now forward termination to the external process if the orchestration process is terminated. A forward_termination argument is available for opting out.

Documentation

Fixed an error in the asset checks factory code example.

Dagster Cloud

The UI now correctly displays failed partitions after a single-run backfill occurs. Previously, if a single-run backfill failed, the corresponding partitions would not display as failed.
Several performance improvements when submitting Snowflake metrics to Dagster Cloud Insights.
Fixed an error which would occur when submitting Snowflake metrics for a removed or renamed asset to Dagster Cloud Insights.

1.5.13 / 0.21.13 (libraries)

New

The SensorEvaluationContext object has two new properties: last_sensor_start_time and is_first_tick_since_sensor_start. This enables sensor evaluation functions to vary behavior on the first tick vs subsequent ticks after the sensor has started.
The asset_selection argument to @sensor and SensorDefinition now accepts sequence of AssetsDefinitions, a sequences of strings, or a sequence of AssetKeys, in addition to AssetSelections.
[dagster-dbt] Support for dbt-core==1.3.* has been removed.
[ui] In code locations view, link to git repo when it’s a valid URL.
[ui] To improve consistency and legibility, when displaying elapsed time, most places in the app will now no longer show milliseconds.
[ui] Runs that were launched by schedules or sensors now show information about the relevant schedule or sensor in the header, with a link to view other runs associated with the same tick.
[dagster-gcp] Added a show_url_only parameter to GCSComputeLogManager that allows you to configure the compute log manager so that it displays a link to the GCS console rather than loading the logs from GCS, which can be useful if giving Dagster access to GCS credentials is undesirable.

Bugfixes

Fixed behavior of loading partitioned parent assets when using the BranchingIOManager
[ui] Fixed an unwanted scrollbar that sometimes appears on the code location list.

Community Contributions

Fixed a bug where dagster would error on FIPS-enabled systems by explicitly marking callsites of hashlib.md5 as not used for security purposes (Thanks @jlloyd-widen!)
[dagster-k8s] Changed execute_k8s_job to be aware of run-termination and op failure by deleting the executing k8s job (Thanks @Taadas!).
[dagstermill] Fixed dagstermill integration with the Dagster web UI to allow locally-scoped static resources (required to show certain frontend-components like plotly graphs) when viewing dagstermill notebooks (Thanks @aebrahim!).
[dagster-dbt] Fixed type annotation typo in the DbtCliResource API docs (Thanks @akan72!)

Experimental

[pipes] Methods have been added to facilitate passing non-Dagster data back from the external process (report_custom_message ) to the orchestration process (get_custom_messages).
[ui] Added a “System settings” option for UI theming, which will use your OS preference to set light or dark mode.

Documentation

[graphql] - Removed experimental marker that was missed when the GraphQL client was fully released
[assets] - Add an example for using retries with assets to the SDA concept page
[general] - Fixed some typos and formatting issues

1.5.12 / 0.21.12 (libraries)

Bugfixes

[dagster-embedded-elt] Fixed an issue where EnvVars used in Sling source and target configuration would not work properly in some circumstances.
[dagster-insights] Reworked the Snowflake insights ingestion pipeline to improve performance and increase observability.

1.5.11 / 0.21.11 (libraries)

New

[ui] Asset graph now displays active filters.
[ui] Asset graph can now be filtered by compute kind.
[ui] When backfilling failed and missing partitions of assets, a “Preview” button allows you to see which ranges will be materialized.
[dagster-dbt] When running DAGSTER_DBT_PARSE_PROJECT_ON_LOAD=1 dagster dev in a new scaffolded project from dagster-dbt project scaffold, dbt logs from creating dbt artifacts to loading the project are now silenced.
[dagster-airbyte] Added a new connection_meta_to_group_fn argument which allows configuring loaded asset groups based on the connection’s metadata dict.
[dagster-k8s] Debug information about failed run workers in errors surfaced by run monitoring now includes logs from sidecar containers, not just the main dagster container.

Bugfixes

The QueuedRunCoordinatorDaemon has been refactored to paginate over runs when applying priority sort and tag concurrency limits. Previously, it loaded all runs into memory causing large memory spikes when many runs were enqueued.
Callable objects can once again be used to back sensor definitions.
UPathIOManager has been updated to use the correct path delimiter when interacting with cloud storages from a Windows process.
In the default multiprocess executor, the STEP_WORKER_STARTED event now fires before importing code in line with the other executors.
During execution, skipping a step now takes precedence over “abandoning” it due to upstream failure. This is expected to substantially improve the “retry from failure” workflow when conditional branching is in use.
Fixed an issue where default config values set to EnvVar did not work properly.
Fixed an issue where resources which implemented IAttachDifferentObjectToOpContext would pass the incorrect object to schedules and sensors.
Fixed a bug that caused auto-materialize failures when using the materialize_on_cron rule with dynamically partitioned assets.
Fixed an issue where sensor ticks would sporadically fail with a StopIteration exception.
[ui] For a job launchpad with a large number of tabs, the “Remove all” option was pushed offscreen. This has been fixed.
[ui] The asset backfill page now correctly shows backfills that target only unpartitioned assets.
[ui] Launching an asset job that was defined without_checks no longer fails by attempting to include the checks.
[dagster-databricks] fix bug that caused crash when polling a submitted job that is still in the Databricks queue (due to concurrency limit).

Community Contributions

Patched issue where the local compute log path exposed file content outside of the compute log base directory - thanks r1b!
[dagster-databricks] Added ability to authenticate using an Azure service principal and fix minor bugs involving authenticating with a service principal while DATABRICKS_HOST is set. Thanks @zyd14!

Experimental

[ui] Dark mode is now available via the User Settings dialog, currently in an experimental state. By default, the app will use a “legacy” theme, closely matching our current colors. A new light mode theme is also available.
[ui] Asset graph group nodes can be collapsed/expanded by right clicking on the collapsed group node or the header of the expanded group node.
[ui] Asset graph group nodes can be all collapsed or all expanded by right clicking anywhere on the graph and selecting the appropriate action.
[ui] The tree view was removed from the asset graph.
[pipes] PipesLambdaClient, an AWS Lambda pipes client has been added to dagster_aws.
Fixed a performance regression introduced in the 1.5.10 release where auto-materializing multi-assets became slower.

Documentation

[getting-started] Added an overview to the Getting Started section that explains the whats and whys of Dagster.
[pipes] Added a guide for using the new PipesLambdaClient with Dagster Pipes.
[getting-started] Simplified the Getting Started category. The following pages have been moved:
- Understanding Dagster project files is now in Guides
- Telemetry is now in About
[guides] Fixed a broken link in the Airflow-to-Dagster concept mapping guide.
[deployment] Cleaned up and updated the Executing with Celery OSS deployment guide.
[general] Added two guides that were previously missing to the side navigation:
- Utilizing SCIM provisioning (Deployment > Cloud > Authentication & users > SCIM provisioning)
- Pandera (Integrations > Pandera)

Dagster Cloud

When a Dagster Cloud agent starts up, it will now wait to display as Running on the Agents tab in the Dagster Cloud UI until it has launched all the code servers that it needs in order to serve requests.

1.5.10 / 0.21.10 (libraries)

New

Added a new MetadataValue.job metadata type, which can be used to link to a Dagster job from other objects in the UI.
[asset backfills] Previously, when partitions definitions were changed after backfill launch, the asset backfill page would be blank. Now, when partitions definitions are changed, the backfill page will display statuses by asset.
[dagster-bigquery, dagster-duckdb, dagster-snowflake]. The BigQuery, DuckDB, and Snowflake I/O Managers will now determine the schema (dataset for BigQuery) in the following order of precedence: schema metadata set on the asset or op, I/O manager schema/ dataset configuration, key_prefix set on the asset. Previously, all methods for setting the schema/dataset were mutually exclusive, and setting more than one would raise an exception.
[dagster-shell] Added option to exclude the shell command from logs.
[dagster-dbt] When running DAGSTER_DBT_PARSE_PROJECT_ON_LOAD=1 dagster dev in a new scaffolded project from dagster-dbt project scaffold, dbt artifacts for loading the project are now created in a static target/ directory.

Bugfixes

Problematic inheritance that was causing pydantic warnings to be emitted has been corrected.
It's now possible to use the logger of ScheduleEvaluationContext when testing via build_schedule_context.
The metadata from a Failure exception is now hoisted up to the failure that culminates when retry limits are exceeded.
Fixed bug in which the second instance of an hour partition at a DST boundary would never be shown as “materialized” in certain UI views.
Fixed an issue where backfilling an hourly partition that occurred during a fall Daylight Savings Time transition sometimes raised an error.
[auto-materialize] Fix issue where assets which were skipped because required parent partitions did not exist would not be materialized once those partitions came into existence.
[dagster ecs] The exit code of failed containers is now included in the failure message.
[dagster pipes] The PipesK8sClient now correctly raises on failed containers.
[dagster pipes] Using pipes within ops instead of assets no longer enforces problematic constraints.
[helm] Added maxCatchupRuns and maxTickRetries configuration options for the scheduler in the Helm chart.
[embedded-elt] Fixed crashes for non-unicode logs.
[UI] Fixed an issue where the test sensor dialog for a sensor that targeted multiple jobs would claim that all of the runs were targeting the same job.
[UI] Asset keys, job names, and other strings in Dagster UI no longer truncate unnecessarily in Firefox in some scenarios
[UI] A larger “View prior events” button on the Asset > Partitions page makes it easier to see the historical materializations of a specific partition of an asset.
[asset-checks, dbt] Fixed a bug that that caused asset checks to not execute when a run was not a subset. As part of the fix, the default dbt selection selection string will not be used for dbt runs, even when not in a subset. Instead we pass the explicit set of models and tests to execute, with DBT_INDIRECT_SELECTION=empty.
[asset-checks] Fixed a bug that caused asset checks defined with @asset(check_specs=... to not cooperate with the key_prefix argument of the load_assets_from_modules method and it’s compatriots.
[asset-checks] Fixed a bug that caused errors when launching a job from the UI that excluded asset checks.
[asset-checks] Fixed a bug that caused UI errors when a check run was deleted.

Deprecations

Marked the experimental Airbyte ingestion-as-code feature as deprecated, to be removed in a future release. We suggest users interested in managing their Airbyte connections in code use the Airbyte terraform provider.

Community Contributions

define_asset_job now accepts an op_retry_policy argument, which specifies a default retry policies for all of the ops in the job. (thanks Eugenio Contreras!)
Fix IOManager not being able to load assets with MultiPartitionsDefinition - thanks @cyberosa!
[dagster-essentials] Three typo fixes in Lesson 8 - thanks Colton @cmpadden!

Experimental

The observable_source_asset decorator now accepts a key argument.
[dagster pipes] an implicit_materializations argument has been added to get_results and get_materialize_result to control whether an implicit materialization event is created or not.
[embedded-elt] Added a new builder and SlingConnectionResource to allow reusing sources and targets interoperably.
[UI] Updated the experimental concurrency limits configuration page to show per-op runtime info and control.
[UI] The Auto-materialize history tab for each asset now only includes rows for evaluations where the result of evaluating the policy has changed. Previously, it would also show a row in the table representing periods of time where nothing changed.
[asset-checks, dbt] build_dbt_asset_selection now also selects asset checks based on their underlying dbt tests. E.g. build_dbt_asset_selection([my_dbt_assets], dbt_select="tag:data_quality") will select the assets and checks for any models and tests tagged with ‘data_quality’.

Documentation

Added information about EnvVar vs. os.getenv to the Environment variables documentation.
Updates to the Asset selection syntax reference, including expanded examples for Python, the CLI, and the Dagster UI.
Added Experimental tags to all Dagster Cloud Insights docs.
Updated the Helm - Migrating a Dagster instance while upgrading guide to include a prerequisites section.

Dagster Cloud

Branch deployments now use the same timeouts for starting and canceling runs that are set for their parent full deployment, instead of a fixed value of 10 minutes.
[k8s agent] Setting labels on a code location will now apply those labels to the kubernetes deployment and service for that code location, rather than just applying them to the pod for that code location.

1.5.9 / 0.21.9 (libraries)

New

[ui] Enabled collapsing asset groups in the global asset view when the new experimental asset graph is turned on in User Settings
[ui] The experimental asset graph sidebar now supports keyboard navigation via arrow keys
[ui] You can now right click nodes in the asset graph to materialize them or filter the graph
[ui] Jobs can now be searched by run ID
[ui] You can now launch runs from the job actions menu
[auto-materialize] A new AutoMaterializeRule.materialize_on_cron() rule makes it possible to create policies which materialize assets on a regular cadence.
[auto-materialize] If a partition-mapping-related error occurs within the Asset Daemon, a more informative error message will be provided.
[dagster-databricks] Extended the set of available config options to the Databricks step launcher - thanks @zyd14!

Bugfixes

Fixed an issue where some schedules incorrectly skipped ticks during Daylight Savings Times transitions.
Returning a SensorResult from a sensor no longer overwrites a cursor if it was set via the context.
Fixed issue which could cause incorrect execution order when executing multi-assets with can_subset=True alongside assets which were upstream of some assets in the multi-asset, and downstream of others.
Previously, when creating an HourlyPartitionsDefinition with a non-UTC timezone and the default format string (or any format string not including a UTC-offset), there was no way to disambiguate between the first and second instance of the repeated hour during a daylight saving time transition. Now, for the one hour per year in which this ambiguity exists, the partition key of the second instance of the hour will have the UTC offset automatically appended to it.
[asset checks] Fixed a bug that caused an error when passing check_specs to AssetsDefinition.from_graph
[dagster-dbt] Fixed a bug in dagster-dbt that caused some dbt tests to not be selected as asset checks.
[dagster-dbt] Fixed an issue where multiple copies of the dbt manifest were held in memory when loading a dbt project as software-defined assets.
The email_on_failure sensor called deprecated methods on the context. This has been fixed

Community Contributions

[dagster-deltalake] Added Delta Lake support along with support for pandas and polars. Thanks Robert Pack @roeap!
[dagster-graphql] Fixed the asset cursor format to use a normalized format - thanks @sisidra!
[dagster-databricks] Extended the set of available config options to the Databricks step launcher - thanks @zyd14!

Experimental

DagsterInstance.report_runless_asset_event is now public.
AutoMaterializeRule.materialize_on_parent_updated now accepts an updated_parents_filter of type AutoMaterializeAssetPartitionsFilter, which allows only materializing based on updates from runs with a required set of tags.

Documentation

Added a new guide for using Dagster Pipes with Kubernetes
Added all OSS deployment guides to the site’s side navigation (Deployment > Open Source > Guides)
Updated formatting in the Migrating your Dagster instance while upgrading Helm guide
Added Experimental tags to Dagster Cloud Insights docs
The Transitioning Data Pipelines from Development to Production and Testing against production with Dagster Cloud Branch Deployments guides have been updated to use Pythonic Resources

Dagster Cloud

Reporting runless events and manually marking an asset as successfully materialized are no possible with “Launcher” level permissions
[ui] Improved search and render performance of Users page, especially for large lists of users.
[billing] Fixed issues with correctly displaying your tax ID

1.5.8 / 0.21.8 (libraries)

Bugfixes

Fixed an error when trying to directly invoke a run status sensor when passing resources.
[dagster-airbyte][dagster-fivetran] Fixed an issue where EnvVars used in Airbyte or Fivetran resources would show up as their processed values in the launchpad when loading assets from a live Fivetran or Airbyte instance.

Dagster Cloud

Substantially improved performance of the Dagster insights DBT/Snowflake usage job.

1.5.7 / 0.21.7 (libraries)

New

The OpExecutionContext and AssetExecutionContext now have a partition_keys property
[dagster-ui] The asset graph layout algorithm has been changed to a much faster one called “tight-tree”
[dagster-ui] The Runs table filters has a top level filter for partitions
[dagster-dbt] dbt-core==1.7.* is now supported.

Bugfixes

Fixed an issue where some schedules skipped a tick on the day after a fall Daylight Savings Time transition.
Fixed a bug that caused backfill policies that execute multiple partitions in a single run not to work with dynamic partitions.
Fixed a bug that caused an error when build_schedule_from_partitioned_job was used with a job with multi-partitioned assets and the partitions_def argument wasn’t provided to define_asset_job.
We now raise an error early if the empty string is provided as an asset’s group name (Thanks Sierrra!)
Fixed an issue where custom setup and teardown methods were not properly called on nested Pythonic resources.
Added a warning message when op or asset config is passed as an argument not named config.
[dagster-cloud] Fixed an issue where overriding the default I/O manager could break the Snowflake-dbt insights job.
[auto-materialize] Fixed an issue where materializing an unpartitioned parent of a dynamic-partitioned asset would only result in the latest dynamic partition of that asset being requested. Now, all partitions will be requested.
[dagster-embedded-elt] Fixed an issue in dagster-embedded-elt where sling’s updated_at parameter was set to the incorrect type
[dagster-ui] Fixed an issue in the launchpad where selecting a partition wouldn’t correctly overwrite fields using the partition’s specific configuration

Community Contributions

A docs fix to the testing concepts page, thanks @NicolaiLolansen!
The schema can now be overridden per asset in DB IO managers, thanks @jrstats!

Experimental

Improved failure recovery and retry behavior when the daemon that launches auto-materialization runs fails or crashes in the middle of a tick.
[asset-checks] UI performance for displaying check results is improved
[asset-checks] Removed noisy experimental warning about AssetCheckKey
[op-concurrency] Fixed a bug where concurrency slots were not getting assigned if a run that was assigned a slot was deleted before the slot had actually been claimed during execution.
[dagster-pipes] The PipesSubprocessClient now inherits the environment variables of the parent process in the launched subprocess.
[dagster-pipes] Exceptions are now reported in the event log for framework components and from the external process.

Documentation

Added a guide for using Dagster Pipes with Databricks

1.5.6 / 0.21.6 (libraries)

New

[dagster-k8s] The PipesK8sClient will now attempt to load the appropriate kubernetes config, and exposes arguments for controlling this process.
[ui] The launch asset backfill modal now offers a preview dialog showing the targeted asset partitions and their backfill policies when partition mapping or varying backfill policies are present.
[asset-checks] New load_asset_checks_from_modules functions for loading asset checks in tandem with load_assets_from_modules.
Previously, the daemon process would terminate with an error if it believed that a thread might be hanging, which sometimes caused undesirable terminations when doing large backfills or auto-materializing many assets. Now, the daemon process will emit a warning instead of terminate.
[dagster-dbt] dagster-dbt project scaffold now uses ~/.dbt/profiles.yml if a profiles.yml is not present in the dbt project directory.
[dagster-dbt] @dbt_assets now support PartitionMapping using DagsterDbtTranslator.get_partition_mapping.
[dagster-dbt] Self dependencies can now be enabled for dbt models that are represented by @dbt_assets. To enable this, add the following metadata to your dbt model’s metadata in your dbt project:

meta:
  dagster:
    has_self_dependency: True

Bugfixes

Fixed an issue where Dagster imports would throw errors when using pydantic<2.0.0 but having pydantic-core installed.
Previously, asset backfills that targeted partitioned assets with a LastPartitionMapping dependency would raise an error. This has been fixed.
Fixed a multipartitions partition mapping bug where a instance is not available to load partitions error was raised.
[asset-checks] Fixed an issue with conflicting op names when using build_asset_with_blocking_check
[ui] Viewing run logs containing very large messages no longer causes the UI to crash in Safari on macOS
[ui] Drilling into the graph of a graph-backed asset with 4+ inputs or outputs no longer causes the asset graph to crash with a rendering error.
[ui] On the backfill details page, clicking to a specific asset correctly shows the partitions that were materialized for that asset when partition mapping is in use.
[ui] The Asset > Partition page now loads partition details more quickly in cases where calculating the staleness of the partition took a significant amount of time.
Fixed a bug introduced in 1.5.0 where instances that haven’t been migrated to the latest schema hit an error upon run deletion.
[auto-materialize] Previously, if an asset partition was skipped on a tick for one reason, and then processed and skipped on a later tick for an additional reason, only the most recent skip reason would be tracked. Now, all skip reasons are tracked.
[dagster-dbt] Fixed an issue where if an exclude that didn’t match any dbt nodes was used in @dbt_assets, an error would be raised. The error is now properly handled.
[dagster-dbt] When invoking DbtCliResource.cli(...) in an op, AssetMaterialization's instead of Output are now emitted.

Experimental

Global op concurrency slots are now released in between retries of op execution failures.

Documentation

Updated the tutorial to reflect best practices and APIs as of Dagster 1.5

Dagster Cloud

The report_asset_observation REST endpoint for reporting runless events is now available.

1.5.5 / 0.21.5 (libraries)

New

Dagster now supports using Pydantic 2 models for Config and Resources. Pydantic 1.10 continues to be supported.
Added a report_asset_observation REST API endpoint for runless external asset observation events
Dramatically improved the performance of partition-mapping, for basic hourly and daily partitions definitions
[ui] When viewing a list of runs, you can quickly add the tag in the “Launched by” column as a filter on the list view. Hover over the tag to see the “Add to filter” button.
[helm] The env vars DAGSTER_K8S_PG_PASSWORD_SECRET and DAGSTER_K8S_INSTANCE_CONFIG_MAP will no longer be set in all pods.
[dagster-pyspark] build_pyspark_zip now takes an exclude parameter that can be used to customize the set of excluded files.
[ui] Links beginning with http://, https:// in unstructured run logs (via context.log) are automatically converted to clickable links

Bugfixes

Fixed an asset backfill bug where certain asset partitions with no targeted parents would hang indefinitely.
Fixed a bug where the source_key_prefix argument to load_assets_from_current_module and load_assets_from_package_name was ignored
Fixed two bugs in dagster_embedded_elt where the mode parameter was not being passed to Sling, and only one asset could be created at a time
Fixed a bug with handing default values for Pydantic validators on Windows
[ui] Clicking an asset with checks shows them in the asset graph sidebar, even if live data on the page is still loading.
[ui] Reported materialization events are presented more clearly in the asset graph sidebar and in other parts of the Dagster UI.

Deprecations

[helm] The pipelineRun configuration in the Helm chart is now deprecated. The same config can be set under dagster-user-deployments

Community Contributions

Added setup_for_execution and teardown_after_execution calls to the inner IOManagers of the BranchingIOManager - thank you @danielgafni!
The S3FakeResource.upload_fileobj() signature is now consistent with boto3 S3.Client.upload_fileobj() - thank you @jeanineharb!
dbt_assets now have an optional name parameter - thank you @AlexanderVR!

Documentation

Added a link to Dagster University to the docs landing page 🎓
Improved readability of API docs landing page
Removed straggling mention of Dagit from the Kubernetes OSS deployment guide

1.5.4 / 0.21.4 (libraries)

New

Added a report_asset_check REST API endpoint for runless external asset check evaluation events. This is available in cloud as well.
The config argument is now supported on @graph_multi_asset
[ui] Improved performance for global search UI, especially for deployments with very large numbers of jobs or assets.
[dagster-pipes] Add S3 context injector/reader.
[dagster-dbt] When an exception when running a dbt command, error messages from the underlying dbt invocation are now properly surfaced to the Dagster exception.
[dagster-dbt] The path to the dbt executable is now configurable in DbtCliResource.

Bugfixes

Fixed a bug introduced in 1.5.3 that caused errors when launching specific Ops in a Job.
Fixed a bug introduced in 1.5.0 that prevented the AssetExecutionContext type annotation for the context parameter in @asset_check functions.
Fixed an issue where the Dagster scheduler would sometimes fail to retry a tick if there was an error reloading a code location in the middle of the tick.
[dagster-dbt] Fixed an issue where explicitly passing in profiles_dir=None into DbtCliResource would cause incorrect validation.
[dagster-dbt] Fixed an issue where partial parsing was not working when reusing existing target paths in subsequent dbt invocations.
[ui] Fixed an issue where the job partitions UI would show “0 total partitions” if the job consisted of more than 100 assets

Community Contributions

[dagster-duckdb] The DuckDBResource and DuckDBIOManager accept a connection_config configuration that will be passed as config to the DuckDB connection. Thanks @xjhc!

Experimental

Added events in the run log when a step is blocked by a global op concurrency limit.
Added a backoff for steps querying for open concurrency slots.
Auto-materialize logic to skip materializing when (1) a backfill is in progress or (2) parent partitions are required but nonexistent are now refactored to be skip rules.
[ui] Added 2 new asset graph layout algorithms under user settings that are significantly faster for large graphs (1000+ assets).

Documentation

Added several pieces of documentation for Dagster Pipes, including:
- A high-level explanation of Pipes
- A tutorial that demonstrates how to use Pipes with a local subprocess
- A reference for using a local subprocess with Pipes
- A detailed explanation of Pipes, including how to customize the process
- API references for Pipes (orchestration-side) and dagster-pipes (external process)
Added documentation for the new experimental External Assets feature

Dagster Cloud

Running multiple agents is no longer considered experimental.
When the agent spins up a new code server while updating a code location, it will now wait until the new code location uploads any changes to Dagster Cloud before allowing the new server to serve requests.

1.5.3 / 0.21.3 (libraries)

New

Alert policies can now be set on assets + asset checks (currently experimental). Check out the alerting docs for more information.
Added a new flag --live-data-poll-rate that allows configuring how often the UI polls for new asset data when viewing the asset graph, asset catalog, or overview assets page. It defaults to 2000 ms.
Added back the ability to materialize changed and missing assets from the global asset-graph. A dialog will open allowing you to preview and select which assets to materialize.
Added an experimental AMP Timeline page to give more visibility into the automaterialization daemon. You can enable it under user settings
Added a report_asset_materialization REST API endpoint for creating external asset materialization events. This is available in cloud as well.
[dbt] The @dbt_assets decorator now accepts a backfill_policy argument, for controlling how the assets are backfilled.
[dbt] The @dbt_assets decorator now accepts a op_tags argument, for passing tags to the op underlying the produced AssetsDefinition.
[pipes] Added get_materialize_result & get_asset_check_result to PipesClientCompletedInvocation
[dagster-datahub] The acryl-datahub pin in the dagster-datahub package has been removed.
[dagster-databricks] The PipesDatabricksClient now performs stdout/stderr forwarding from the Databricks master node to Dagster.
[dagster-dbt] The hostname of the dbt API can now be configured when executing the dagster-dbt-cloud CLI.
[dagster-k8s] Added the ability to customize how raw k8s config tags set on an individual Dagster job are merged with raw k8s config set on the K8sRunLauncher. See the docs for more information.

Bugfixes

Previously, the asset backfill page would display negative counts if failed partitions were manually re-executed. This has been fixed.
Fixed an issue where the run list dialog for viewing the runs occupying global op concurrency slots did not expand to fit the content size.
Fixed an issue where selecting a partition would clear the launchpad and typing in the launchpad would clear the partition selection
Fixed various issues with the asset-graph displaying the wrong graph
The IO manager’s handle_output method is no longer invoked when observing an observable source asset.
[ui] Fixed an issue where the run config dialog could not be scrolled.
[pipes] Fixed an issue in the PipesDockerClient with parsing logs fetched via the docker client.
[external assets] Fixed an issue in external_assets_from_specs where providing multiple specs would error
[external assets] Correct copy in tooltip to explain why Materialize button is disabled on an external asset.

Breaking Changes

[pipes] A change has been made to the environment variables used to detect if the external process has been launched with pipes. Update the dagster-pipes version used in the external process.
[pipes] The top level function is_dagster_pipes_process has been removed from the dagster-pipes package.

Community Contributions

Override a method in the azure data lake IO manager (thanks @0xfabioo)!
Add support of external launch types in ECS run launcher (thanks @cuttius)!

Experimental

The Python GraphQL client is considered stable and is no longer marked as experimental.

1.5.2 / 0.21.2 (libraries)

Bugfixes

Previously, asset backfills targeting assets with multi-run backfill policies would raise a "did not submit all run requests" error. This has been fixed.

Dagster Cloud

The experimental dagster-insights package has receieved some API surface area updates and bugfixes.

1.5.1 / 0.21.1 (libraries)

New

Dagster now automatically infers a dependency relationship between a time-partitioned asset and a multi-partitioned asset with a time dimension. Previously, this was only inferred when the time dimension was the same in each asset.
The EnvVar utility will now raise an exception if it is used outside of the context of a Dagster resource or config class. The get_value() utility will retrieve the value outside of this context.
[ui] The runs page now displays a “terminate all” button at the top, to bulk terminate in-progress runs.
[ui] Asset Graph - Various performance improvements that make navigating large asset graphs smooth
[ui] Asset Graph - The graph now only fetches data for assets within the viewport solving timeout issues with large asset graphs
[ui] Asset Graph Sidebar - The sidebar now shows asset status
[dagster-dbt] When executing dbt invocations using DbtCliResource, an explicit target_path can now be specified.
[dagster-dbt] Asset checks can now be enabled by using DagsterDbtTranslator and DagsterDbtTranslatorSettings: see the docs for more information.
[dagster-embedded-elt] Dagster library for embedded ELT

Bugfixes

[ui] Fixed various issues on the asset details page where partition names would overflow outside their containers
[ui] Backfill notification - Fixed an issue where the backfill link didn’t take the —path-prefix option into account
[ui] Fixed an issue where the instance configuration yaml would persist rendering even after navigating away from the page.
[ui] Fixed issues where config yaml displays could not be scrolled.
[dagster-webserver] Fixed a performance issue that caused the UI to load slowly

Deprecations

[dagster-dbt] Enabling asset checks using dbt project metadata has been deprecated.

1.5.0 (core) / 0.21.0 (libraries) "How Will I Know"

Major Changes since 1.4.0 (core) / 0.20.0 (libraries)

Core

Improved ergonomics for execution dependencies in assets - We introduced a set of APIs to simplify working with Dagster that don't use the I/O manager system for handling data between assets. I/O manager workflows will not be affected.
- AssetDep type allows you to specify upstream dependencies with partition mappings when using the deps parameter of @asset and AssetSpec.
- MaterializeResult can be optionally returned from an asset to report metadata about the asset when the asset handles any storage requirements within the function body and does not use an I/O manager.
- AssetSpec has been added as a new way to declare the assets produced by @multi_asset. When using AssetSpec, the multi_asset does not need to return any values to be stored by the I/O manager. Instead, the multi_asset should handle any storage requirements in the body of the function.
Asset checks (experimental) - You can now define, execute, and monitor data quality checks in Dagster [docs].
- The @asset_check decorator, as well as the check_specs argument to @asset and @multi_asset enable defining asset checks.
- Materializing assets from the UI will default to executing their asset checks. You can also execute individual checks.
- When viewing an asset in the asset graph or the asset details page, you can see whether its checks have passed, failed, or haven’t run successfully.
Auto materialize customization (experimental) - AutoMaterializePolicies can now be customized [docs].
- All policies are composed of a set of AutoMaterializeRules which determine if an asset should be materialized or skipped.
- To modify the default behavior, rules can be added to or removed from a policy to change the conditions under which assets will be materialized.

dagster-pipes

Dagster pipes is a new library that implements a protocol for launching compute into external execution environments and consuming streaming logs and Dagster metadata from those environments. See https://github.com/dagster-io/dagster/discussions/16319 for more details on the motivation and vision behind Pipes.
Out-the-box integrations
- Clients: local subprocess, Docker containers, Kubernetes, and Databricks
  - PipesSubprocessClient, PipesDocketClient, PipesK8sClient, PipesDatabricksClient
- Transport: Unix pipes, Filesystem, s3, dbfs
- Languages: Python
Dagster pipes is composable with existing launching infrastructure via open_pipes_session. One can augment existing invocations rather than replacing them wholesale.

Since 1.4.17 (core) / 0.20.17 (libraries)

New

[ui] Global Asset Graph performance improvement - the first time you load the graph it will be cached to disk and any subsequent load of the graph should load instantly.

Bugfixes

Fixed a bug where deleted runs could retain instance-wide op concurrency slots.

Breaking Changes

AssetExecutionContext is now a subclass of OpExecutionContext, not a type alias. The code

def my_helper_function(context: AssetExecutionContext):
    ...

@op
def my_op(context: OpExecutionContext):
    my_helper_function(context)

will cause type checking errors. To migrate, update type hints to respect the new subclassing.

AssetExecutionContext cannot be used as the type annotation for @ops run in @jobs. To migrate, update the type hint in @op to OpExecutionContext. @ops that are used in @graph_assets may still use the AssetExecutionContext type hint.

## old
@op
def my_op(context: AssetExecutionContext):
    ...

## correct
@op
def my_op(context: OpExecutionContext):
    ...

[ui] We have removed the option to launch an asset backfill as a single run. To achieve this behavior, add backfill_policy=BackfillPolicy.single_run() to your assets.

Community Contributions

has_dynamic_partition implementation has been optimized. Thanks @edvardlindelof!
[dagster-airbyte] Added an optional stream_to_asset_map argument to build_airbyte_assets to support the Airbyte prefix setting with special characters. Thanks @chollinger93!
[dagster-k8s] Moved “labels” to a lower precedence. Thanks @jrouly!
[dagster-k8s] Improved handling of failed jobs. Thanks @Milias!
[dagster-databricks] Fixed an issue where DatabricksPysparkStepLauncher fails to get logs when job_run doesn’t have cluster_id at root level. Thanks @PadenZach!
Docs type fix from @sethusabarish, thank you!

Documentation

Our Partitions documentation has gotten a facelift! We’ve split the original page into several smaller pages, as follows:
- Partitions - An overview of what a partition is, benefits, and how to use it
- Partitioning assets - Details about partitioning assets
- Partitioning ops - Details about partitioning ops
- Testing partitions - As described

Dagster Cloud

New dagster-insights sub-module - We have released an experimental dagster_cloud.dagster_insights module that contains utilities for capturing and submitting external metrics about data operations to Dagster Cloud via an api. Dagster Cloud Insights is a soon-to-be released feature that shows improves visibility into usage and cost metrics such as run duration and Snowflake credits in the Cloud UI.

1.4.17 / 0.20.17 (libraries)

New

[dagster-dbt] DbtCliResource now enforces that the current installed version of dbt-core is at least version 1.4.0.
[dagster-dbt] DbtCliResource now properly respects DBT_TARGET_PATH if it is set by the user. Artifacts from dbt invocations using DbtCliResource will now be placed in unique subdirectories of DBT_TARGET_PATH.

Bugfixes

When executing a backfill that targets a range of time partitions in a single run, the partition_time_window attribute on OpExecutionContext and AssetExecutionContext now returns the time range, instead of raising an error.
Fixed an issue where the asset backfill page raised a GraphQL error for backfills that targeted different partitions per-asset.
Fixed job_name property on the result object of build_hook_context.

Experimental

AssetSpec has been added as a new way to declare the assets produced by @multi_asset.
AssetDep type allows you to specify upstream dependencies with partition mappings when using the deps parameter of @asset and AssetSpec.
[dagster-ext] report_asset_check method added to ExtContext.
[dagster-ext] ext clients now must use yield from to forward reported materializations and asset check results to Dagster. Results reported from ext that are not yielded will raise an error.

Documentation

The Dagster UI documentation got an overhaul! We’ve updated all our screenshots and added a number of previously undocumented pages/features, including:
- The Overview page, aka the Factory Floor
- Job run compute logs
- Global asset lineage
- Overview > Resources
The Resources documentation has been updated to include additional context about using resources, as well as when to use os.getenv() versus Dagster’s EnvVar.
Information about custom loggers has been moved from the Loggers documentation to its own page, Custom loggers.

1.4.16 / 0.20.16 (libraries)

New

[ui] When using the search input within Overview pages, if the viewer’s code locations have not yet fully loaded into the app, a loading spinner will now appear to indicate that search results are pending.

Bugfixes

Fixed an asset backfill bug that caused occasionally caused duplicate runs to be kicked off in response to manual runs upstream.
Fixed an issue where launching a run from the Launchpad that included many assets would sometimes raise an exception when trying to create the tags for the run.
[ui] Fixed a bug where clicking to view a job from a run could lead to an empty page in situations where the viewer’s code locations had not yet loaded in the app.

Deprecations

Deprecated ExpectationResult. This will be made irrelevant by upcoming data quality features.

Community Contributions

Enabled chunked backfill runs to target more than one asset, thanks @ruizh22!

Experimental

Users can now emit arbitrary asset materializations, observations, and asset check evaluations from sensors via SensorResult.

1.4.15 / 0.20.15 (libraries)

New

The deps parameter for @asset and @multi_asset now supports directly passing @multi_asset definitions. If an @multi_asset is passed to deps, dependencies will be created on every asset produced by the @multi_asset.
Added an optional data migration to convert storage ids to use 64-bit integers instead of 32-bit integers. This will incur some downtime, but may be required for instances that are handling a large number of events. This migration can be invoked using dagster instance migrate --bigint-migration.
[ui] Dagster now allows you to run asset checks individually.
[ui] The run list and run details page now show the asset checks targeted by each run.
[ui] In the runs list, runs launched by schedules or sensors will now have tags that link directly to those schedules or sensors.
[ui] Clicking the "N assets" tag on a run allows you to navigate to the filtered asset graph as well as view the full list of asset keys.
[ui] Schedules, sensors, and observable source assets now appear on the resource “Uses” page.
[dagster-dbt] The DbtCliResource now validates at definition time that its project_dir and profiles_dir arguments are directories that respectively contain a dbt_project.yml and profiles.yml.
[dagster-databricks] You can now configure a policy_id for new clusters when using the databricks_pyspark_step_launcher (thanks @zyd14!)
[ui] Added an experimental sidebar to the Asset lineage graph to aid in navigating large graphs. You can enable this feature under user settings.

Bugfixes

Fixed an issue where the dagster-webserver command was not indicating which port it was using in the command-line output.
Fixed an issue with the quickstart_gcp example wasn’t setting GCP credentials properly when setting up its IOManager.
Fixed an issue where the process output for Dagster run and step containers would repeat each log message twice in JSON format when the process finished.
[ui] Fixed an issue where the config editor failed to load when materializing certain assets.
[auto-materialize] Previously, rematerializing an old partition of an asset which depended on a prior partition of itself would result in a chain of materializations to propagate that change all the way through to the most recent partition of this asset. To prevent these “slow-motion backfills”, this behavior has been updated such that these updates are no longer propagated.

Experimental

MaterializeResult has been added as a new return type to be used in @asset / @multi_asset materialization functions
[ui] The auto-materialize page now properly indicates that the feature is experimental and links to our documentation.

Documentation

The Concepts category page got a small facelift, to bring it line with how the side navigation is organized.

Dagster Cloud

Previously, when importing a dbt project in Cloud, naming the code location “dagster” would cause build failures. This is now disabled and an error is now surfaced.

1.4.14 / 0.20.14 (libraries)

New

Added a new tooltip to asset runs to either view the asset list or lineage

Bugfixes

[ui] Fixed an issue where re-executing a run from a particular run's page wouldn’t navigate to the newly created run

Experimental

[dagster-ext] An initial version of the dagster-ext module along with subprocess, docker, databricks, and k8s pod integrations are now available. Read more at https://github.com/dagster-io/dagster/discussions/16319. Note that the module is temporarily being published to PyPI under dagster-ext-process, but is available in python as import dagster_ext.
[asset checks] Added an ‘execute’ button to run checks without materializing the asset. Currently this is only supported for checks defined with @asset_check or AssetChecksDefinition.
[asset checks] Added check_specs argument to @graph_multi_asset
[asset checks] Fixed a bug with checks on @graph_asset that would raise an error about nonexistant checks

1.4.13 / 0.20.13 (libraries)

New

OpExecutionContext.add_output_metadata can now be called multiple times per output.

Bugfixes

The double evaluation of log messages in sensor logging has been fixed (thanks @janosroden !)
Cron schedules targeting leap day (ending with 29 2 *) no longer cause exceptions in the UI or daemon.
Previously, if multiple partitioned observable_source_assets with different partition definitions existed in the same code location, runs targeting those assets could fail to launch. This has been fixed.
When using AutoMaterializePolicies with assets that depended on prior partitions of themselves, updating the start_date of their underlying PartitionsDefinition could result in runs being launched for partitions that no longer existed. This has been fixed.
Fixed an issue where auto-materilization could sometimes produce duplicate runs if there was an error in the middle of an auto-materialization tick.
[dagster-census] A recent change to the Census API broke compatibility with this integration. This has been fixed (thanks @ldnicolasmay!)
[dagster-dbt] Fixed an issue where DagsterDbtTranslator did not properly invoke get_auto_materialize_policy and get_freshness_policy for load_assets_from_dbt_project.
[ui] Fixed a number of interaction bugs with the Launchpad config editor, including issues with newlines and multiple cursors.
[ui] Asset keys and partitions presented in the asset checks UI are sorted to avoid flickering.
[ui] Backfill actions (terminate backfill runs, cancel backfill submission) are now available from an actions menu on the asset backfill details page.

Community Contributions

Typo fix in run monitoring docs (thanks c0dk)!
Grammar fixes in testing docs (thanks sonnyarora)!
Typo fix in contribution docs (thanks tab1tha)!

Experimental

[dagster-dbt][asset checks] Added support to model dbt tests as Dagster asset checks.
[asset checks] Added @graph_asset support. This can be used to implement blocking checks, by raising an exception if the check fails.
[asset checks] Fixed @multi_asset subsetting, so only checks which target assets in the subset will execute.
[asset checks] AssetCheckSpecs will now cause an error at definition time if they target an asset other than the one they’re defined on.
[asset checks] The status of asset checks now appears in the asset graph and asset graph sidebar.

Dagster Cloud

[Experimental] Added support for freeing global op concurrency slots after runs have finished, using the deployment setting: run_monitoring > free_slots_after_run_end_seconds

1.4.12 / 0.20.12 (libraries)

New

The context object now has an asset_key property to get the AssetKey of the current asset.
Performance improvements to the auto-materialize daemon when running on large asset graphs.
The dagster dev and dagster-daemon run commands now include a --log-level argument that allows you to customize the logger level threshold.
[dagster-airbyte] AirbyteResource now includes a poll_interval key that allows you to configure how often it checks an Airbyte sync’s status.

Bugfixes

Fixed an issue where the dagster scheduler would sometimes raise an error if a schedule set its cron_schedule to a list of strings and also had its default status set to AUTOMATICALLY_RUNNING.
Fixed an issue where the auto-materialize daemon would sometimes raise a RecursionError when processing asset graphs with long upstream dependency chains.
[ui] Fixed an issue where the Raw Compute Logs dropdown on the Run page sometimes didn’t show the current step name or properly account for retried steps.

Community Contributions

[dagster-databricks] Fixed a regression causing DatabricksStepLauncher to fail. Thanks @zyd14!
Fixed an issue where Dagster raised an exception when combining observable source assets with multiple partitions definitions. Thanks @aroig!
[dagster-databricks] Added support for client authentication with OAuth. Thanks @zyd14!
[dagster-databricks] Added support for workspace and volumes init scripts in the databricks client. Thanks @zyd14!
Fixed a missing import in our docs. Thanks @C0DK!

Experimental

Asset checks are now displayed in the asset graph and sidebar.
[Breaking] Asset check severity is now set at runtime on AssetCheckResult instead of in the @asset_check definition. Now you can define one check that either errors or warns depending on your check logic. ERROR severity no longer causes the run to fail. We plan to reintroduce this functionality with a different API.
[Breaking] @asset_check now requires the asset= argument, even if the asset is passed as an input to the decorated function. Example:
```
@asset_check(asset=my_asset)
def my_check(my_asset) -> AssetCheckResult:
    ...
```
[Breaking] AssetCheckSpec now takes asset= instead of asset_key=, and can accept either a key or an asset definition.
[Bugfix] Asset checks now work on assets with key_prefix set.
[Bugfix] Execution failure asset checks are now displayed correctly on the checks tab.

Documentation

[dagster-dbt] Added example of invoking DbtCliResource in custom asset/op to API docs.
[dagster-dbt] Added reference to explain how a dbt manifest can be created at run time or build time.
[dagster-dbt] Added reference to outline the steps required to deploy a Dagster and dbt project in CI/CD.
Miscellaneous fixes to broken links and typos.

1.4.11 / 0.20.11 (libraries)

New

Dagster code servers now wait to shut down until any calls that they are running have finished, preventing them from stopping while in the middle of executing sensor ticks or other long-running operations.
The dagster execute job cli now accepts —-op-selection (thanks @silent-lad!)
[ui] Option (Alt) + R now reloads all code locations (OSS only)

Bugfixes

Adds a check to validate partition mappings when directly constructing AssetsDefinition instances.
Assets invoked in composition functions like @graph and @job now work again, fixing a regression introduced in 1.4.5.
Fixed an issue where a race condition with parallel runs materializing the same asset could cause a run to raise a RecursionError during execution.
Fixed an issue where including a resource in both a schedule and a job raised a “Cannot specify resource requirements” exception when the definitions were loaded.
The ins argument to graph_asset is now respected correctly.
Fixed an issue where the daemon process could sometimes stop with a heartbeat failure when the first sensor it ran took a long time to execute.
Fixed an issue where dagster dev failed on startup when the DAGSTER_GRPC_PORT `environment variable was set in the environment.
deps arguments for an asset can now be specified as an iterable instead of a sequence, allowing for sets to be passed.
[dagster-aws] Fixed a bug where the S3PickleIOManager didn’t correctly handle missing partitions when allow_missing_partitions was set. Thanks @o-sirawat!
[dagster-k8s] in the helm chart, the daemon securityContext setting now applies correctly to all init containers (thanks @maowerner!)

Community Contributions

[dagster-databricks] Migrated to use new official databricks Python SDK. Thanks @judahrand!

Experimental

New APIs for defining and executing checks on software-defined assets. These APIs are very early and subject to change. The corresponding UI has limited functionality. Docs
Adds a new auto-materialize skip rule AutoMaterializeRule.skip_on_not_all_parents_updated that enforces that an asset can only be materialized if all parents have been materialized since the asset's last materialization.
Exposed an auto-materialize skip rule – AutoMaterializeRule.skip_on_parent_missing –which is already part of the behavior of the default auto-materialize policy.
Auto-materialize evaluation history will now be stored for 1 month, instead of 1 week.
The auto-materialize asset daemon now includes more logs about what it’s doing for each asset in each tick in the Dagster Daemon process output.

Documentation

[dagster-dbt] Added reference docs for dagster-dbt project scaffold.

Dagster Cloud

Fixed an issue where the Docker agent would sometimes fail to load code locations with long names with a hostname connection error.

1.4.10 / 0.20.10 (libraries)

Bugfixes

[dagster-webserver] Fixed an issue that broke loading static files on Windows.

1.4.9 / 0.20.9 (libraries)

Bugfixes

[dagster-webserver] Fixed an issue that caused some missing icons in the UI.

1.4.8 / 0.20.8 (libraries)

New

A new @partitioned_config decorator has been added for defined configuration for partitioned jobs. Thanks @danielgafni!
[dagster-aws] The ConfigurablePickledObjectS3IOManager has been renamed S3PickleIOManager for simplicity. The ConfigurablePickledObjecS3IOManager will continue to be available but is considered deprecated in favor of S3PickleIOManager. There is no change in the functionality of the I/O manager.
[dagster-azure] The ConfigurablePickledObjectADLS2IOManager has been renamed ADLS2PickleIOManager for simplicity. The ConfigurablePickledObjectADLS2IOManager will continue to be available but is considered deprecated in favor of ADLS2PickleIOManager. There is no change in the functionality of the I/O manager.
[dagster-dbt] When an exception is raised when invoking a dbt command using DbtCliResource, the exception message now includes a link to the dbt.log produced. This log file can be inspected for debugging.
[dagster-gcp] The ConfigurablePickledObjectGCSIOManager has been renamed GCSPickleIOManager for simplicity. The ConfigurablePickledObjecGCSIOManager will continue to be available but is considered deprecated in favor of GCSPickleIOManager. There is no change in the functionality of the I/O manager.

Bugfixes

Fixed a bug that caused a DagsterInvariantViolationError when executing a multi-asset where both assets have self-dependencies on earlier partitions.
Fixed an asset backfill issue where some runs continue to be submitted after a backfill is requested for cancellation.
[dagster-dbt] Fixed an issue where using the --debug flag raised an exception in the Dagster framework.
[ui] “Launched run” and “Launched backfill” toasts in the Dagster UI behave the same way. To open in a new tab, hold the cmd/ctrl key when clicking “View”
[ui] When opening step compute logs, the view defaults to stderr which aligns with Python’s logging defaults.
[ui] When viewing a global asset graph with more than 100 assets, the “choose a subset to display” prompt is correctly aligned to the query input.

Community Contributions

Fix for loading assets with a BackfillPolicy, thanks @ruizh22!

Experimental

[dagster-graphql] The Dagster GraphQL Python client now includes a default timeout of 300 seconds for each query, to ensure that GraphQL requests don’t hang and never return a response. If you are running a query that is expected to take longer than 300 seconds, you can set the timeout argument when constructing a DagsterGraphQLClient.
[ui] We are continuing to improve the new horizontal rendering of the asset graph, which you can enable in Settings. This release increases spacing between nodes and improves the traceability of arrows on the graph.

Documentation

Several Pythonic resources and I/O managers now have API docs entries.
Updated the tutorial’s example project and content to be more explicit about resources.
[dagster-dbt] Added API docs examples for DbtCliResource and DbtCliResource.cli(...).
Some code samples in API docs for InputContext and OutputContext have been fixed. Thanks @Sergey Mezentsev!

Dagster Cloud

When setting up a new organization by importing a dbt project, using GitLab is now supported.

1.4.7 / 0.20.7 (libraries)

Experimental

Added a respect_materialization_data_versions option to auto materialization. It can enabled in dagster.yaml with
```
auto_materialize:
  respect_materialization_data_versions: True
```
This flag may be changed or removed in the near future.

1.4.6 / 0.20.6 (libraries)

New

ops or assets with multiple outputs that are all required and return type None/ Nothing will interpret an explicitly or implicitly returned value None to indicate that all outputs were successful.
The skip_reason argument to the constructor of SensorResult now accepts a string in addition to a SkipReason.
[dagster-k8s] Added a step_k8s_config field to k8s_job_executor that allows you to customize the raw Kubernetes config for each step in a job. See the docs for more information.
[dagster-k8s] Launched run pods now have an additional code location label.
[dagster-ui] The runs table now lets you toggle which tags are always visible.
[dagster-dbt] dagster-dbt project scaffold now creates the scaffold in multiple files:
- constants.py contains a reference to your manifest and dbt project directory
- assets.py contains your initial dbt assets definitions
- definitions.py contains the code to load your asset definitions into the Dagster UI
- schedules.py contains an optional schedule to add for your dbt assets
[dagster-dbt] Added new methods get_auto_materialize_policy and get_freshness_policy to DagsterDbtTranslator.
[dagster-fivertran] Sync options can now be passed to load_assets_from_fivetran_instance.
[dagster-wandb] W&B IO Manager now handles partitions natively. (Thanks @chrishiste!)

Bugfixes

Previously, canceling large asset backfills would cause the daemon to time out and display a “not running” error. This has been fixed.
[dagster-ssh] Previously the SSHResource would warn when allow_host_key_change was set. Now known hosts are always loaded from the system hosts file, and the allow_host_key_change parameter is ignored.
Previously, when using AutoMaterializePolicies, partitioned assets downstream of partitioned observable source assets could be materialized before their parent partitions were observed. This has been fixed.

Documentation

@graph_multi_asset now has an API docs entry.
The GCSComputeLogManager example in the Dagster Instance reference is now correct.
Several outdated K8s documentation links have been removed from the Customizing your Kubernetes deployment guide.
Added callouts to the GitHub and GitLab Branch Deployment guides specifying that some steps are optional for Serverless users.
The “Graphs” page under the “Concepts” section has been renamed to “Op Graphs” and moved inside under the “Ops” heading.
[dagster-dbt] Added API examples for @dbt_assets for the following use-cases:
- Running dbt commands with flags
- Running dbt commands with --vars
- Running multiple dbt commands
- Retrieving dbt artifacts after running a dbt command
- Invoking other Dagster resouces alongside dbt
- Defining and accessing Dagster config alongside dbt

Dagster Cloud

The viewer role now has permission to edit their own user tokens.

1.4.5 / 0.20.5 (libraries)

New

@graph_asset now takes a config parameter equivalent to the parameter on @graph.
Added an optional dynamic_partitions_store argument to DynamicPartitionsDefinition for multi-partition run properly with dynamic partitions (Thanks @elzzz!).
[dagster-grpahql] Added partitionsByAssets to backfillParams for ranged partition backfill (Thanks @ruizh22!).
[dagster-dbt] Support for dbt-core==1.6 has been added.
[dagster-dbt] DbtCliResource now supports configuring profiles_dir.
[dagster-k8s] Allow specifying restart_policy on k8s_job_op (Thanks @Taadas!).
[dagster-snowflake] Added authenticator to SnowflakePandasIOManager, which allows specifying the authentication mechanism to use (Thanks @pengw0048!).
[ui] The Asset > Events page now allows you to filter by event type, making it easy to hide observations.
[ui] The Asset > Partitions page checks to see if the selected partition is stale and displays stale causes in the details pane.
[ui] Hovering over "Fresh" tags now provides detailed information about why the last materialization meets the asset's freshness policy.
[ui] The global asset graph can now be filtered to display a subset of the available asset groups.

Bugfixes

In some situations, multiple materializations of the same asset could be kicked off when using a lazy AutoMaterializePolicy with assets that had at least one source asset parent and at least one non-source asset parent. This has been fixed.
After applying an eager AutoMaterializePolicy to a time-partitioned asset downstream of an unpartitioned asset, the latest partition would only ever be materialized a single time, rather than updating in response to any parent updates. This has been fixed.
Fixed an issue that would cause the creation of a StaticPartitionsDefinition containing many thousands of partitions could take a significant amount of time.
The run coordinator daemon now uses a fresh request context on each iteration, fixing an issue where stale grpc server references could be used in certain high volume conditions.
Automatically generated data versions for partitioned assets now correctly reflect the data versions of upstream partitions. Previously, they were computed using the data versions from the most recent materializations of upstream assets regardless of partition.
[dagster-airbyte] Previously, attempting to load assets from an Airbyte instance in which some of the tables had hyphens in their name would result in an error. This has been fixed.
[dagster-dbt] Previously, attempting to load assets from a dbt project in which some of the models had hyphens in their name would result in an error. This has been fixed.
[dagstermill] Fixed a bug where known state for executing dagstermill ops was not correctly passed in (Thanks @motuzov!).
[ui] Pressing the up or down arrow key without a selection in the asset graph no longer causes a page error.

Documentation

Added the starter project’s template for Dagster University.
Fixed an incorrect method name in DagsterDbtTranslator Docs (Thanks @akan72!).

Dagster Cloud

When importing a dbt project on the Dagster Cloud setup page, an Unexpected exception error would be raised when scaffolding a pull request on a repository with no profiles.yml. This behavior has been updated to raise a more descriptive error message on the repo selection page.
The running multiple agents guide has been revamped to discuss running agent replicas and zero-downtime deployment of the agent.
The agentReplicas config setting on the helm chart has been renamed to isolatedAgents. In order to use this config setting, your user code dagster version needs to be 1.4.3 or greater.

1.4.4 / 0.20.4 (libraries)

New

[ui] When viewing a run for auto-materialized assets, show a tag with information about the assets that were materialized.
[ui] In the Auto-materialize History view, when one or more of an asset’s parents have been updated, the set of updated parents will be viewable.
[ui] Link to the auto-materialized history for an asset from the asset DAG view.
[ui] For runs that were the result of auto-observation, show a tag for this in the Runs list view.
Added warnings for storage incompatibility with the experimental global op concurrency.

Bugfixes

[dagster-dbt] Fixed an issue where dagster-dbt project scaffold didn’t create a project directory with all the scaffolded files.
Fixed an issue which could cause errors when using the SpecificPartitionsPartitionMapping with auto-materialization.

Breaking Change

Previously, it was possible to set max_materializations_per_minute on an AutoMaterializePolicy to a non-positive number. This will now result in an error.

Community Contributions

Fix for loading multipartitions paths in upath_io_manager from @harrylojames; thank you!
Docs typo fix from @C0DK; thank you!

Documentation

Revamped the dagster-dbt tutorial to take advantage of dagster project scaffold and the new dagster-dbt APIs.

1.4.3 / 0.20.3 (libraries)

New

[dagster-dbt] When invokingdagster-dbt project scaffold on a dbt project directory, if a profiles.yml exists in the root of the directory, its contents are used to add dbt adapter packages to the scaffolded setup.py.
The default sentinel value for the multiprocessing executor’s max_concurrent field has been changed from 0 to None to more clearly signal its intent. A value of 0 is still interpreted as the sentinel value which dynamically allocates max_concurrent based on detected CPU count.

Bugfixes

IO managers defined on jobs will now be properly merged with resources defined in Definitions, so that jobs are able to override the IO manager used.
[dagster-fivetran] Fixed an issue where EnvVars in a FivetranResource would not be evaluated when loading assets from the Fivetran instance.
[dagster-airbyte] Fixed an issue where EnvVars in an AirbyteResource would not be evaluated when loading assets from the Airbyte resource.

Documentation

[dagster-dbt] Added API docs for DbtCliResource, DbtCliInvocation, @dbt_assets, DagsterDbtTranslator, dagster-dbt project scaffold
[dagster-dbt] Expanded references for new APIs:
- Added documentation to customize asset definition attributes for dbt assets
- Added documentation to define upstream and downstream dependencies to dbt assets
- Added documentation to define schedules for dbt assets

Dagster Cloud

The experimental agent config setting agent_replicashas been deprecated in favor of a new name isolated_agents (agentReplicas --> isolatedAgents in the helm chart). Upgrading to the new name requires all code locations to be on 1.4.3 or greater.

1.4.2 / 0.20.2 (libraries)

Bugfixes

Fixes a bug in dagster-dbt that was preventing it from correctly materializing subselections of dbt asset.

1.4.1 / 0.20.1 (libraries)

Bugfixes

Fixes a bug in dagster-dbt that was preventing it efficiently loading dbt projects from a manifest.

1.4.0 / 0.20.0 (libraries) "Material Girl"

Major Changes since 1.3.0 (core) / 0.19.0 (libraries)

Core

Auto-materialize history – We’ve added a UI that tracks why assets were or were not materialized according to theirAutoMaterializePolicy. It’s located under Assets → Select an asset with an AutoMaterializePolicy → Auto-materialize history tab.
Auto-materialize performance – We’ve made significant performance improvements to the Asset Daemon, allowing it to keep up with asset graphs containing thousands of assets and assets with a large history of previously-materialized partitions.
Asset backfill cancellation — Asset backfills can now be canceled, bring them to parity with job backfills. When an asset backfill is requested for cancellation, the daemon cancels runs until all runs are terminated, then marks the backfill as “canceled”.
non_argument_deps → deps – We’ve deprecated the non_argument_deps parameter of @asset and @multi_asset in favor of a new deps parameter. The new parameter makes it clear that this is a first-class way of defining dependencies, makes code more concise, and accepts AssetsDefinition and SourceAsset objects, in addition to the strs and AssetKeys that the previous parameter accepted.
Group-level asset status UI – the new Assets Overview dashboard, located underneath the Activity tab of the Overview page, shows the status all the assets in your deployment, rolled up by group.
Op concurrency (experimental) — We’ve added a feature that allows limiting the number of concurrently executing ops across runs. [docs]
DynamicPartitionsDefinition and SensorResult are no longer marked experimental.
Automatically observe source assets, without defining jobs (experimental – The @observable_source_asset decorator now accepts an auto_observe_interval_minutes parameter. If the asset daemon is turned on, then the observation function will automatically be run at this interval. Downstream assets with eager auto-materialize policies will automatically run if the observation function indicates that the source asset has changed. [docs]
Dagit → Dagster UI – To reduce the number of Dagster-specific terms that new users need to learn when learning Dagster, “Dagit” has been renamed to the “The Dagster UI”. The dagit package is deprecated in favor of the dagster-webserver package.
Default config in the Launchpad - When you open the launchpad to kick off a job or asset materialization, Dagster will now automatically populate the default values for each field.

dagster-dbt

The new @dbt_assets decorator allows much more control over how Dagster runs your dbt project. [docs]
The new dagster-dbt project scaffold command line interface makes it easy to create files and directories for a Dagster project that wraps an existing dbt project.
Improved APIs for defining asset dependencies – The new get_asset_key_for_model and get_asset_key_for_source utilities make it easy to specify dependencies between upstream dbt assets and downstream non-dbt assets. And you can now more easily specify dependencies between dbt models and upstream non-dbt assets by specifying Dagster asset keys in the dbt metadata for dbt sources.

Since 1.3.14 (core) / 0.19.14 (libraries)

New

The published Dagster Docker images now use Python 3.10, instead of 3.7.
We’ve deprecated the non_argument_deps parameter of @asset and @multi_asset in favor of a new deps parameter. The new parameter makes it clear that this is a first-class way of defining dependencies, makes code more concise, and accepts AssetsDefinition and SourceAsset objects, in addition to the strs and AssetKeys that the previous parameter accepted.
The UPathIOManager can now be extended to load multiple partitions asynchronously (Thanks Daniel Gafni!).
By default, Dagster will now automatically load default config values into the launchpad. This behavior can be disabled in the user settings page.
[dagster-k8s] The Helm chart now sets readiness probes on user code deployment servers by default. These can be disabled with dagster-user-deployments.deployments.[...].readinessProbe.enabled=false.
[dagster-airbyte] In line with the deprecation of non_argument_deps in favor of deps, build_airbyte_assets now accepts a deps parameter.
[dagstermill] In line with the deprecation of non_argument_deps in favor of deps, define_dagstermill_asset now accepts a deps parameter.
[dagster-dbt] A new CLI utility dagster-dbt project scaffold has been provided to scaffold a Dagster code location for an existing dbt project.

Bugfixes

Duplicate partition keys passed to StaticPartitionsDefinition will now raise an error.
Fixed a bug that caused lazy AutoMaterializePolicy's to not materialize missing assets.
[ui] Fixed an issue where global search and large DAGs were broken when using --path-prefix.
Schedule and sensor run submissions are now kept up to date with the current workspace, fixing an issue where a stale reference to a server would be used in some conditions.
[dagster-dbt] Fixed an issue where materializing dbt models with the same name as a dbt source would cause an error.

Breaking Changes

Support for Python 3.7 has been dropped.
build_asset_reconciliation_sensor (Experimental) has been removed. It was deprecated in 1.3 in favor of AutoMaterializePolicy.
asset_key(s) properties on AssetIn and AssetDefinition have been removed in favor of key(s). These APIs were deprecated in 1.0.
root_input_manager and RootInputManagerDefinition have been removed in favor of input_manager and InputManagerDefinition. These APIs were deprecated in 1.0.
[dagster-pandas] The event_metadata_fn parameter on create_dagster_pandas_dataframe_type has been removed in favor of metadata_fn.
[dagster-dbt] The library has been substantially revamped to support the new @dbt_assets and DbtCliResource. See the migration guide for details.
- Group names for dbt assets are now taken from a dbt model's group. Before, group names were determined using the model's subdirectory path.
- Support for dbt-rpc has been removed.
- The class alias DbtCloudResourceV2 has been removed.
- DbtCli has been renamed to DbtCliResource. Previously, DbtCliResource was a class alias for DbtCliClientResource.
- load_assets_from_dbt_project and load_assets_from_dbt_manifest now default to use_build=True.
- The default assignment of groups to dbt models loaded from load_assets_from_dbt_project and load_assets_from_dbt_manifest has changed. Rather than assigning a group name using the model’s subdirectory, a group name will be assigned using the dbt model’s dbt group.
- The argument node_info_to_definition_metadata_fn for load_assets_from_dbt_project and load_assets_from_dbt_manifest now overrides metadata instead of adding to it.
- The arguments for load_assets_from_dbt_project and load_assets_from_dbt_manifest now must be specified using keyword arguments.
- When using the new DbtCliResource with load_assets_from_dbt_project and load_assets_from_dbt_manifest, stdout logs from the dbt process will now appear in the compute logs instead of the event logs.

Deprecations

The dagit python package is deprecated and will be removed in 2.0 in favor of dagster-webserver. See the migration guide for details.
The following fields containing “dagit” in the Dagster helm chart schema have been deprecated in favor of “dagsterWebserver” equivalents (see migration guide for details):
- dagit → dagsterWebserver
- ingress.dagit → ingress.dagsterWebserver
- ingress.readOnlyDagit → ingress.readOnlyDagsterWebserver
[Dagster Cloud ECS Agent] We've introduced performance improvements that rely on the AWS Resource Groups Tagging API. To enable, grant your agent's IAM policy permission to tag:GetResources. Without this policy, the ECS Agent will log a deprecation warning and fall back to its old behavior (listing all ECS services in the cluster and then listing each service's tags).
DbtCliClientResource, dbt_cli_resource and DbtCliOutput are now being deprecated in favor of DbtCliResource.
A number of arguments on load_assets_from_dbt_project and load_assets_from_dbt_manifest are now deprecated in favor of other options. See the migration for details.

Community Contributions

Docs typo fix from @chodera, thank you!
Run request docstring fix from @Jinior, thank you!

Documentation

All public methods in the Dagster API now have docstrings.
The entirety of the documentation has been updated to now refer to the “Dagster webserver” or “Dagster UI” where “Dagit” was previously used for both entities.

1.3.14 (core) / 0.19.14 (libraries)

New

DynamicPartitionsDefinition and SensorResult are no longer marked experimental
DagsterInstance now has a get_status_by_partition method, which returns the status of each partition for a given asset. Thanks renzhe-brian!
DagsterInstance now has a get_latest_materialization_code_versions method, which returns the code version of the latest materialization for each of the provided (non-partitioned) assets.
The error message for when an asset illegally depends on itself is now more informative.
Further performance improvements for the Asset Daemon.
Performance improvements in the asset graph view for large asset graphs.
Pandas 2.x is now supported in all dagster packages.
build_asset_context has been added as an asset focused replacement for build_op_context.
build_op_context now accepts a partition_key_range parameter.
New AssetSelection.upstream_source_assets method allows selecting source assets upstream of the current selection.
AssetSelection.key_prefixes and AssetSelection.groups now accept an optional include_sources parameter.
The AutoMaterialize evaluations UI now provides more details about partitions and waiting on upstream assets.
[dbt] The DbtCli resource is no longer marked experimental.
[dbt] The global_config parameter of the DbtCli resource has been renamed to global_config_flags
[dbt] load_assets_from_dbt_project and load_assets_from_dbt_manifest now work with the DbtCli resource.
[dbt] The manifest argument of the @dbt_assets decorator now additionally can accept a Path argument representing a path to the manifest file or dictionary argument representing the raw manifest blob.
[dbt] When invoking DbtCli.cli from inside a @dbt_assets-decorated function, you no longer need to supply the manifest argument as long as you provide the context argument.
[dbt] The DbtManifest object can now generate schedules using dbt selection syntax.

dbt_manifest.build_schedule(
  job_name="materialize_dbt_models",
  cron_schedule="0 0 * * *",
  dbt_select="fqn:*"
)

[dbt] When invoking DbtCli.cli and the underlying command fails, an exception will now be raised. To suppress the exception, run the DbtCli.cli(..., raise_on_error=False).
[ui] You can now alphabetically sort your partitions on the asset partitions page
[ui] A button in the “Run is materializing this asset” and “Run failed to materialize this asset” banners provides direct access to the relevant run logs

Bugfixes

Fixed a bug that caused asset metadata to not be available available on the OutputContext when using with_attributes or AssetsDefinition.from_graph.
Previously, if a partitioned asset at the root of the graph had more missing partitions than its AutoMaterializePolicy’s max_materializations_per_minute parameter, those older partitions would not be properly discarded from consideration on subsequent ticks. This has been fixed.
Fixed a bug that caused AutoMaterializePolicy.lazy() to not materialize missing assets that were downstream of assets without an AutoMaterializePolicy.
In rare cases, the AssetDaemon could hit an exception when using a combination of freshness policies and observable source assets. This has been fixed.
Previously, string type annotations (most commonly via modules containing from __future__ import annotations) would cause errors in most cases when used with Dagster definitions. This has been fixed for the vast majority of cases.
AssetExecutionContext has returned to being a type alias for OpExecutionContext.
[ui] Date filtering on the runs page now takes your timezone into consideration
[ui] Fixed a bug where selecting partitions in the launchpad dialog cleared out your configuration
[ui] In the run Gantt chart, executed steps that follow skipped steps no longer render off the far right of the visualization.
[ui] Cancelling a running backfill no longer makes canceled partitions un-selectable on the job partitions page and backfill modal, and cancellation is shown in gray instead of red.

Breaking Changes

[experimental] The internal time_window_partition_scope_minutes parameter of the AutoMaterializePolicy class has been removed. Instead, max_materializations_per_minute should be used to limit the number of runs that may be kicked off for a partitioned asset.

Deprecations

[dbt] DbtCliResource has been deprecated in favor of DbtCli.
The python package dagit has been deprecated in favor of a new package dagster-webserver.
OpExecutionContext.asset_partition_key_range has been deprecated in favor of partition_key_range.

Community Contributions

The databricks_pyspark_step_launcher will no longer error when executing steps that target a single partition of a DynamicPartitionsDefinition (thanks @weberdavid!).
Increased timeout on readinessProbe for example user code images, which prevents breakages in certain scenarios (thanks @leehuwuj)!
Avoid creation of erroneous local directories by GCS IO manager (thanks @peterjclaw)!
Fixed typo in intro docs (thanks @adeboyed)!
Fix typo in bigquery docs (thanks @nigelainscoe)!
Fix typing on run tag validation (thanks @yuvalgimmunai)!
Allow passing repositoryCredentials arn as config to ecs run launcher (thanks @armandobelardo)!

Experimental

The @observable_source_asset decorator now accepts an auto_observe_interval_minutes parameter. If the asset daemon is turned on, then the observation function will automatically be run at this interval.
[dbt] DbtCliTask has been renamed to DbtCliInvocation
[dbt] The get_asset_key_by_output_name and get_node_info_by_output_name methods of DbtManifest have been renamed toget_asset_key_for_output_name and get_node_info_for_output_name, respectively.
[ui] A new feature flag allows you to switch Asset DAG rendering to a tighter horizontal layout, which may be preferable in some scenarios

Documentation

Many public methods that were missing in the API docs are now documented. Updated classes include DagsterInstance, *MetadataValue, DagsterType, and others.
dagster-pandera now has an API docs page.
Deprecated methods in the API docs now are marked with a special badge.

1.3.13 (core) / 0.19.13 (libraries)

Bugfixes

Fixes a bug in dagster project from-example that was preventing it from downloading examples correctly.

1.3.12 (core) / 0.19.12 (libraries)

New

The --name argument is now optional when running dagster project from-example.
An asset key can now be directly specified via the asset decorator: @asset(key=...).
AssetKey now has a with_prefix method.
Significant performance improvements when using AutoMaterializePolicys with large numbers of partitions.
dagster instance migrate now prints information about changes to the instance database schema.
The dagster-cloud-agent helm chart now supports setting K8s labels on the agent deployment.
[ui] Step compute logs are shown under “Last Materialization” in the asset sidebar.
[ui] Truncated asset names now show a tooltip when hovered in the asset graph.
[ui] The “Propagate changes” button has been removed and replaced with “Materialize Stale and Missing” (which was the “Propagate changes” predecessor).

Bugfixes

[ui] Fixed an issue that prevented filtering by date on the job-specific runs tab.
[ui] “F” key with modifiers (alt, ctrl, cmd, shift) no longer toggles the filter menu on pages that support filtering.
[ui] Fix empty states on Runs table view for individual jobs, to provide links to materialize an asset or launch a run for the specific job, instead of linking to global pages.
[ui] When a run is launched from the Launchpad editor while an editor hint popover is open, the popover remained on the page even after navigation. This has been fixed.
[ui] Fixed an issue where clicking on the zoom controls on a DAG view would close the right detail panel for selected nodes.
[ui] Fixed an issue shift-selecting assets with multi-component asset keys.
[ui] Fixed an issue with the truncation of the asset stale causes popover.
When using a TimeWindowPartitionMapping with a start_offset or end_offset specified, requesting the downstream partitions of a given upstream partition would yield incorrect results. This has been fixed.
When using AutoMaterializePolicys with observable source assets, in rare cases, a second run could be launched in response to the same version being observed twice. This has been fixed.
When passing in hook_defs to define_asset_job, if any of those hooks had required resource keys, a missing resource error would surface when the hook was executed. This has been fixed.
Fixed a typo in a documentation URL in dagster-duckdb-polars tests. The URL now works correctly.

Experimental

[dagster-dbt] Added methods to DbtManifest to fetch asset keys of sources and models: DbtManifest.get_asset_key_for_model, DbtManifest.get_asset_key_for_source. These methods are utilities for defining python assets as dependencies of dbt assets via @asset(key=manifest.get_asset_key_for_model(...).
[dagster-dbt] The use of the state_path parameter with DbtManifestAssetSelection has been deprecated, and will be removed in the next minor release.
Added experimental support for limiting global op/asset concurrency across runs.

Dependencies

Upper bound on the grpcio package (for dagster) has been removed.

Breaking Changes

Legacy methods of PartitionMapping have been removed. Defining custom partition mappings has been unsupported since 1.1.7.

Community Contributions

[dagster-airbyte] Added the ability to specify asset groups to build_airbyte_assets. Thanks @guy-rvvup!

Documentation

For Dagster Cloud Serverless users, we’ve added our static IP addresses to the Serverless docs.

1.3.11 (core) / 0.19.11 (libraries)

New

Assets with lazy auto-materialize policies are no longer auto-materialized if they are missing but don’t need to be materialized in order to help downstream assets meet their freshness policies.
[ui] The descriptions of auto-materialize policies in the UI now include their skip conditions along with their materialization conditions.
[dagster-dbt] Customized asset keys can now be specified for nodes in the dbt project, using meta.dagster.asset_key. This field takes in a list of strings that are used as the components of the generated AssetKey.

version: 2

models:
  - name: users
    config:
      meta:
        dagster:
          asset_key: ["my", "custom", "asset_key"]

[dagster-dbt] Customized groups can now be specified for models in the dbt project, using meta.dagster.group. This field takes in a string that is used as the Dagster group for the generated software-defined asset corresponding to the dbt model.

version: 2

models:
  - name: users
    config:
      meta:
        dagster:
          group: "my_group"

Bugfixes

Fixed an issue where the dagster-msteams and dagster-mlflow packages could be installed with incompatible versions of the dagster package due to a missing pin.
Fixed an issue where the dagster-daemon run command sometimes kept code server subprocesses open longer than it needed to, making the process use more memory.
Previously, when using @observable_source_assets with AutoMaterializePolicies, it was possible for downstream assets to get “stuck”, not getting materialized when other upstream assets changed, or for multiple down materializations to be kicked off in response to the same version being observed multiple times. This has been fixed.
Fixed a case where the materialization count for partitioned assets could be wrong.
Fixed an error which arose when trying to request resources within run failure sensors.
[dagster-wandb] Fixed handling for multi-dimensional partitions. Thanks @chrishiste

Experimental

[dagster-dbt] improvements to @dbt_assets
- project_dir and target_path in DbtCliTask are converted from type str to type pathlib.Path.
- In the case that dbt logs are not emitted as json, the log will still be redirected to be printed in the Dagster compute logs, under stdout.

Documentation

Fixed a typo in dagster_aws S3 resources. Thanks @akan72
Fixed a typo in link on the Dagster Instance page. Thanks @PeterJCLaw

1.3.10 (core) / 0.19.10 (libraries)

New

[dagster-dbt] By default, freshness policies and auto materialize policies on dbt assets can now be specified using the dagster field under +meta configuration. The following are equivalent:

Before:

version: 2

models:
  - name: users
    config:
      dagster_freshness_policy:
        maximum_lag_minutes: 60
        cron_schedule: "0 9 * * *"
      dagster_auto_materialize_policy:
        type: "lazy"

After:

version: 2

models:
  - name: users
    config:
      meta:
        dagster:
          freshness_policy:
            maximum_lag_minutes: 60
            cron_schedule: "0 9 * * *"
          auto_materialize_policy:
            type: "lazy"

Added support for Pythonic Config classes to the @configured API, which makes reusing op and asset definitions easier:

class GreetingConfig(Config):
    message: str

@op
def greeting_op(config: GreetingConfig):
    print(config.message)

class HelloConfig(Config):
    name: str

@configured(greeting_op)
def hello_op(config: HelloConfig):
    return GreetingConfig(message=f"Hello, {config.name}!")

Added AssetExecutionContext to replace OpExecutionContext as the context object passed in to @asset functions.
TimeWindowPartitionMapping now contains an allow_nonexistent_upstream_partitions argument that, when set to True, allows a downstream partition subset to have nonexistent upstream parents.
Unpinned the alembic dependency in the dagster package.
[ui] A new “Assets” tab is available from the Overview page.
[ui] The Backfills table now includes links to the assets that were targeted by the backfill.

Bugfixes

Dagster is now compatible with a breaking change introduced in croniter==1.4.0. Users of earlier versions of Dagster can pin croniter<1.4.
Fixed an issue introduced in 1.3.8 which prevented resources from being bound to sensors when the specified job required late-bound resources.
Fixed an issue which prevented specifying resource requirements on a @run_failure_sensor.
Fixed an issue where the asset reconciliation sensor failed with a “invalid upstream partitions” error when evaluating time partitions definitions with different start times.
[dagster-k8s] Fixed an issue where annotations are not included in the Dagster Helm chart for the pod that is created when configuring the Helm chart to run database migrations.
[ui] Fixed an issue with filtering runs by created date on the Runs page.
[ui] The “upstream partitions missing” warning no longer appears in the asset backfill dialog if the upstream partitioned asset is a source asset.
[dagster-dbt] Fixed an issue where asset dependencies for dbt models with ephemeral models in between them would sometimes be improperly rendered.

Community Contributions

Added support for setting resources in asset and multi_asset sensors. Thanks @plaflamme!
Fixed an issue where py.typed was missing in the dagster-graphql package. Thanks @Tanguy-LeFloch!

Experimental

Evaluation history for AutoMaterializePolicys will now be cleared after 1 week.
[dagster-dbt] Several improvements to @dbt_assets:
- profile and target can now be customized on the DbtCli resource.
- If a partial_parse.msgpack is detected in the target directory of your dbt project, it is now copied into the target directories created by DbtCli to take advantage of partial parsing.
- The metadata of assets generated by @dbt_assets can now be customized by overriding DbtManifest.node_info_to_metadata.
- Execution duration of dbt models is now added as default metadata to AssetMaterializations.

Documentation

Added a new tutorial section about using resources.

Dagster Cloud

Fixed an issue where overriding the container name of a code server pod using serverK8sConfig.containerConfig.name did not actually change the container name.

1.3.9 (core) / 0.19.9 (libraries)

Dagster Cloud

Fixed an issue in the 1.3.8 release where the Dagster Cloud agent would sometimes fail to start up with an import error.

1.3.8 (core) / 0.19.8 (libraries)

New

Multipartitioned assets with one time dimension can now depend on earlier partitions of themselves.
define_asset_job now accepts a hooks argument.
Added support for sqlalchemy==2.x
[ui] The Runs page has been revamped with better filtering support
[ui] The automaterialize policy page for SDA’s using the experimental AutomaterializePolicy feature now indicates time periods where no materializations happened due to no materialization conditions being met
[dagster-k8s] The Dagster Helm chart now includes an additionalInstanceConfig key that allows you to supply additional configuration to the Dagster instance.
[dagster-aws] The EcsRunLauncher now uses a different task definition family for each job, instead of registering a new task definition revision each time a different job is launched.
[dagster-aws] The EcsRunLauncher now includes a run_ecs_tags config key that lets you configure tags on the launched ECS task for each run.

Bugfixes

When a sensor had yield statement and also returned a SkipReason, the SkipReason would be ignored. This has been fixed.
[dagster-cloud] Fixed a bug in the docker user code launcher that was preventing code location containers from being properly cleaned up.
Fixed an issue where the Dagster UI would sometimes raise a ``RuntimeError: dictionary changed size during iteration` exception while code servers were being reloaded.
Fixed an issue where the Dagster daemon reloaded your code server every 60 seconds when using the new experimental dagster code-server start CLI, instead of only reloading your code when you initiate a reload from the Dagster UI.
Fixed a GraphQL error which would occur when loading the default config for jobs without config.
[dagster-dbt] Fixed an error which would arise when trying to load assets from a DBT Cloud instance using the Pythonic-style resource.

Community Contributions

Added the ability to specify metadata on asset jobs, by adding the metadata parameter to define_asset_job (Thanks Elliot2718!)
[dagster-databricks] Connected databricks stdout to local stdout, to be handled by the compute log manager (Thanks loerinczy!)
[dagster-census] Fixed poll_sync_run to handle the “preparing” status from the Census API (Thanks ldnicolasmay!)

Experimental

@observable_source_asset-decorated functions can now return a DataVersionsByPartition to record versions for partitions.
@dbt_assets
- DbtCliTask's created by invoking DbtCli.cli(...) now have a method .is_successful(), which returns a boolean representing whether the underlying CLI process executed the dbt command successfully.
- Descriptions of assets generated by @dbt_assets can now be customized by overriding DbtManifest.node_info_to_description.
- IO Managers can now be configured on @dbt_assets.

Documentation

New guide on using Dagster to manage machine learning pipelines

Dagster Cloud

Added support for streaming upload of compute logs to Dagster Cloud
The ECS agent now supports setting server_ecs_tags and run_ecs_tags that apply to each service or task created by the agent. See the docs for more information.
Fixed run filtering for calls to instance.get_run_partition_data in Dagster Cloud.

1.3.7 (core) / 0.19.7 (libraries)

New

Adding a .env file in the working directory when running dagster dev can now be used for Dagster system variables like DAGSTER_HOME or environment variables referenced in your dagster.yaml file using an env: key. Previously, setting a .env file only worked for environment variables referenced in your Dagster code.
When using the GraphQL Python client, submit_job_execution can now take in a RunConfig object. Previously, it could only take a Python dictionary with the run configuration.
Asset backfills can now be canceled via a button in the UI. This will terminate unfinished runs and prevent new runs from being queued.
Introduced a new user setting which allows automatically expanding default config for jobs in the launchpad.
[dagit] Dagit now supports displaying a Polars tag on the asset graph.

Bugfixes

Fixed an issue where setting a resource in an op didn’t work if the Dagster job was only referenced within a schedule or sensor and wasn’t included in the jobs argument to Definitions.
[dagster-slack][dagster-pagerduty][dagster-msteams][dagster-airflow] Fixed issue where pre-built sensors and hooks which created urls to the runs page in the UI would use the old /instance/runs path instead of the new /runs.

Community Contributions

[dagster-databricks] Added a configurable resource key to create_databricks_run_now_op, thanks @srggrs!

1.3.6 (core) / 0.19.6 (libraries)

New

Added an experimental dagster code-server start command that can be used to launch a code server, much like dagster api grpc. Unlike dagster api grpc, however, dagster code-server start runs the code in a subprocess, so it can reload code from the Dagster UI without needing to restart the command. This can be useful for jobs that load code from some external source and may want to reload job definitions without restarting the process.
Added a new sensors.num_submit_workers key to dagster.yaml that can be used to decrease latency when a sensor emits multiple run requests within a single tick. See the docs for more information.
[dagster-k8s] The k8s_job_executor can now be used to launch each step of a job in its own Kubernetes, pod, even if the Dagster deployment is not using the K8sRunLauncher to launch each run in its own Kubernetes pod.
[ui] When viewing a list of schedules or sensors in Overview or on individual code locations, it is now possible to filter by running state.
[ui] A new experimental asset overview page is available via user settings.

Bugfixes

Fixed issue where asset jobs featuring a subset of a larger multi_asset could be rendered as an op-based job.
Fixed an issue where Pythonic IO managers could not be passed to the io_manager_def param on an asset.
Fixed an issue where late-binding an executor to a job, such as providing one to Definitions, would not correctly update the config schema.
[dagster-k8s] Fixed an issue where setting maxResumeRunAttempts to null in the helm chart would cause it to be set to a default value of 3 instead of disabling run retries.
[dagster-k8s] Fixed an issue where the k8s_job_executor would sometimes fail with a 409 Conflict error after retrying the creation of a Kubernetes pod for a step, due to the job having already been created during a previous attempt despite raising an error.
[dagster-dbt] Fixed an issue where dbt logs were not being captured when invoking dbt commands using the resource.
[dagster-dbt] Fixed an issue where if op_name was passed to load_assets_from_dbt_manifest, and a select parameter was specified, a suffix would be appended to the desired op name.
[ui] Fixed an issue where using a path prefix for dagit would lead to JavaScript bundle loading errors.
[ui] Resizing the viewport while viewing the Run timeline now correctly resizes the timeline and its contents.
[ui] Ctrl-scroll to zoom the DAG view, and shift-scroll to pan horizontally now work on all platforms and an instructional tooltip explains the zoom interaction.

Experimental

[dagster-dbt] Added a new implementation of the dbt Resource, DbtCli, in dagster_dbt.cli. This new resource only support dbt-core>=1.4.0.
[dagster-dbt] Added a new decorator @dbt_assets in dagster_dbt.asset_decorator that allows you to specify a compute function for a selected set of dbt assets that loaded as an AssetsDefinition.

Documentation

[dagster-duckdb] New guide and API reference page for the DuckDB I/O managers and resource
[rbac] - Added documentation for the new Dagster Cloud Teams feature for role-based access control (RBAC). We’ve also revamped the documentation for Dagster Cloud user roles and permissions - check it out here.
Fixed a typo in the "Using Environment Variables and Secrets" guide (thanks snikch!)

Dagster Cloud

Fixed a bug in the multi-asset sensor where using context methods to fetch materializations by partition would cause a timeout.
The ECS agent can now configure sidecars to be included with the tasks that the agent launches. See the docs for more information.

1.3.5 (core) / 0.19.5 (libraries)

New

A new max_materializations_per_minute parameter (with a default of 1) to AutoMaterializationPolicy.eager() and AutoMaterializationPolicy.lazy() allows you to set bounds on the volume of work that may be automatically kicked off for each asset. To restore the previous behavior, you can explicitly set this limit to None.
DailyPartitionsDefinition, HourlyPartitionsDefinition, WeeklyPartitionsDefinition, and MonthlyPartitionsDefinition now support and end_date attribute.
[ui] When GraphQL requests time out with 504 errors, a toaster message is now shown indicating the error, instead of failing silently.
[dagster-snowflake] The Snowflake I/O managers now support authentication via unencrypted private key.

Bugfixes

When using AutoMaterializePolicys or build_asset_reconciliation_sensor, a single new data version from an observable source asset could trigger multiple runs of the downstream assets. This has been fixed.
Fixed a bug with pythonic resources where raw run config provided to a resource would be ignored.
We previously erroneously allowed the use of EnvVar and IntEnvVar within raw run config - although they just returned the name of the env var rather than retrieve its value. This has been fixed to error directly.
[ui] Fixed an issue in the left navigation where code locations with names with URI-encodable characters (e.g. whitespace) could not be expanded.
[ui] Fixed an issue where the time shown on the Runs page when a run was starting was shown in an incorrect timezone.
[dagster-dbt] Fixed an issue where selecting models by * was being interpreted as glob pattern, rather than as a dbt selector argument. We now explicitly set the default selection pattern as fqn:*.
[dagster-cloud cli] Fixed and issue where dagster-cloud serverless deploy did not create a unique image tag if the --image tag was not specified.

Community Contributions

Added an option to specify op_name on load_assets_from_dbt_project and load_assets_from_dbt_manifest (thanks @wkeifenheim!)
[Helm] Added support for connecting to code servers over SSL (thanks @jrouly!)

Documentation

New tutorial section on how to manage your own I/O and control over dependencies

Dagster Cloud

Added the ability to assign users to teams. A team is a group of users with a shared set of permissions. See the docs for more information.

1.3.4 (core) / 0.19.4 (libraries)

New

Run monitoring will now detect runs that are stuck in a CANCELING state due to an error during termination and move them into CANCELED. See the docs for more information.
TimeWindowPartitionMapping objects are now current-time aware. Subsequently, only upstream/downstream partitions existent at the current time are returned.
ExecuteJobResult was renamed to JobExecutionResult (ExecuteJobResult remains a deprecated alias)
New AssetSelection.key_prefixes method allows matching asset keys starting with a provided prefix.
[dagster-airflow] persistent database URI can now be passed via environment variable
[dagster-azure] New ConfigurablePickledObjectADLS2IOManager that uses pythonic config
[dagster-fivetran] Fivetran connectors that are broken or incomplete are now ignored
[dagster-gcp] New DataProcResource follows the Pythonic resource system. The existing dataproc_resource remains supported.
[dagster-k8s] The K8sRunLauncher and k8s_job_executor will now retry the api call to create a Kubernetes Job when it gets a transient error code (500, 503, 504, or 401).
[dagster-snowflake] The SnowflakeIOManager now supports private_keys that have been base64 encoded to avoid issues with newlines in the private key. Non-base64 encoded keys are still supported. See the SnowflakeIOManager documentation for more information on base64 encoded private keys.
[ui] Unpartitioned assets show up on the backfill page
[ui] On the experimental runs page you can open the “view all tags” dialog of a row by pressing the hotkey ‘t’ while hovering that row.
[ui] The “scroll-to-pan” feature flag has been removed, and scroll-to-pan is now default functionality.

Bugfixes

The server side polling for events during a live run has had its rate adjusted and no longer uses a fixed interval.
[dagster-postgres] Fixed an issue where primary key constraints were not being created for the kvs, instance_info, and daemon_hearbeats table for existing Postgres storage instances that were migrating from before 1.2.2. This should unblock users relying on the existence of a primary key constraint for replication.
Fixed a bug that could cause incorrect counts to be shown for missing asset partitions when partitions are in progress
Fixed an issue within SensorResult evaluation where multipartitioned run requests containing a dynamic partition added in a dynamic partitions request object would raise an invalid partition key error.
[ui] When trying to terminate a queued or in-progress run from a Run page, forcing termination was incorrectly given as the only option. This has been fixed, and these runs can now be terminated normally.
[ui] Fixed an issue on the asset job partitions page where an infinite recursion error would be thrown when using TimeWindowPartitionMapping.
[dagster-databricks] Polling for the status of skipped Databricks runs now properly terminates.

Deprecations

ExecuteJobResult is now a deprecated alias for the new name, JobExecutionResult.

Community Contributions

[dagster-airbyte] When supplying an airbyte_resource to load_assets_from_connections , you may now provide an instance of the AirbyteResource class, rather than just airbyte_resource.configured(...) (thanks @joel-olazagasti!)
[dagster-airbyte] Fixed an issue connecting to destinations that support normalization (thanks @nina-j!)
Fix an error in the docs code snippets for IO managers (thanks out-running-27!)
Added an example to show how to build the Dagster's Software-Defined Assets for an analytics workflow with different deployments for a local and prod environment. (thanks @PedramNavid!)
[dagster-celery] Fixed an issue where the dagster-celery CLI accepted an inconsistent configuration format - it now matches the same format as the celery_executor. Thanks @boenshao!

Documentation

New “Managing your own I/O” tutorial section and other minor tutorial improvements.

Dagster Cloud

The ECS agent will now display task logs and other debug information when a code location fails to start up.
You can now set ecs_timeout in your ECS user code launcher config to extend how long the ECS agent polls for new code servers to start. Extending this timeout is useful if your code server takes an unusually long time to start up - for example, because it uses a very large image.
Added support for running the Dagster Cloud Kubernetes agent in a cluster using istio.

1.3.3 (core) / 0.19.3 (libraries)

New

load_assets_from_package_module and the other core load_assets_from_ methods now accept a source_key_prefix argument, which allows applying a key prefix to all the source assets that are loaded.
OpExecutionContext now has an asset_partitions_time_window_for_input method.
RunFailureSensorContext now has a get_step_failure_events method.

The Pythonic resource system now supports a set of lifecycle hooks which can be used to manage setup and teardown:

class MyAPIClientResource(ConfigurableResource):
    api_key: str
    _internal_client: MyAPIClient = PrivateAttr()

    def setup_for_execution(self, context):
        self._internal_client = MyAPIClient(self.api_key)

    def get_all_items(self):
        return self._internal_client.items.get()

Added support for specifying input and output config on ConfigurableIOManager.
QueuedRunCoordinator and SubmitRunContext are now exposed as public dagster exports.
[ui] Downstream cross-location dependencies of all source assets are now visible on the asset graph. Previously these dependencies were only displayed if the source asset was defined as a regular asset.
[ui] A new filtering experience is available on the Runs page after enabling feature flag “Experimental Runs table view with filtering”.
[dagster-aws] Allow the S3 compute log manager to specify a show_url_only: true config option, which will display a URL to the S3 file in dagit, instead of the contents of the log file.
[dagster-aws] PickledObjectS3IOManager now fully supports loading partitioned inputs.
[dagster-azure] PickedObjectADLS2IOManager now fully supports loading partitioned inputs.
[dagster-gcp] New GCSResource and ConfigurablePickledObjectGCSIOManager follow the Pythonic resource system. The existing gcs_resource and gcs_pickle_io_manager remain supported.
[dagster-gcp] New BigQueryResource follows the Pythonic resource system. The existing bigquery_resource remains supported.
[dagster-gcp] PickledObjectGCSIOManager now fully supports loading partitioned inputs.
[dagster-postgres] The event watching implementation has been moved from listen/notify based to the polling watcher used by MySQL and SQLite.
[dagster-slack] Add monitor_all_repositories to make_slack_on_run_failure_sensor, thanks @danielgafni!
[dagster-snowflake] New SnowflakeResource follows the Pythonic resource system. The existing snowflake_resource remains supported.

Bugfixes

Multi-asset sensor context methods for partitions now work when partitioned source assets are targeted.
Previously, the asset backfill page would incorrectly display negative counts for assets with upstream failures. This has been fixed.
In cases where there is an asset which is upstream of one asset produced by a subsettable multi-asset, but downstream of another, Dagster will automatically subset the multi-asset to resolve the underlying cycle in the op dependency graph. In some cases, this process could omit some of the op dependencies, resulting in incorrect execution order. This has been fixed.
Fixed an issue with AssetMetadataValue.value that would cause an infinite recursion error.
Fixed an issue where observable source assets would show up in the asset graph of jobs that did not include them.
Fixed an issue with directly invoking an op or asset with a Pythonic config object with a discriminated union did not work properly.
Fixes a bug where sensors attached to jobs that rely on resources from Definitions were not provided with the required resource definition.

Dagster Cloud

volumes and volumeMounts values have been added to the agent helm chart.

Experimental

[dagster-airbyte] load_assets_from_airbyte_instance and load_assets_from_airbyte_project now take a connection_to_auto_materialize_policy_fn for setting AutoMaterializePolicys on Airbyte assets
[dagster-airbyte] Introduced experimental support for Airbyte Cloud. See the using Dagster with Airbyte Cloud docs for more information.

Documentation

Ever wanted to know more about the files in Dagster projects, including where to put them in your project? Check out the new Dagster project files reference for more info!
We’ve made some improvements to the sidenav / information architecture of our docs!
- The Guides section now contains several new categories, including Working with data assets and Working with tasks
- The Community section is now under About
The Backfills concepts page now includes instructions on how to launch backfills that target ranges of partitions in a single run.

1.3.2 (core) / 0.19.2 (libraries)

New

Added performance improvements for yielding time-partitioned run requests.
The asset backfill page now displays targeted assets in topological order.
Replicas can now be specified on Hybrid ECS and K8s agents. In ECS, use the NumReplicas parameter on the agent template in CloudFormation, or the dagsterCloudAgent.replicas field in Helm.
Zero-downtime agent updates can now be configured for the ECS agent. Just set the enableZeroDowntimeDeploys parameter to true in the CloudFormation stack for your agent.
The AssetsDefinition.from_graph, as well as the@graph_asset and @graph_multi_asset decorators now support specifying AutoMaterializePolicys.
[dagstermill] Pythonic resource variant of the dagstermill I/O manager is now available.
[dagster-duckdb] New DuckDBResource for connecting to and querying DuckDB databases.
[ui] Sensor / Schedule overview pages now allow you to select and start/stop multiple sensors/schedules at once.
[ui] Performance improvements to global search for big workspaces.

Bugfixes

async def ops/assets no longer prematurely finalize async generators during execution.
In some cases, the AutoMaterialize Daemon (and the build_asset_reconciliation_sensor) could incorrectly launch new runs for partitions that already had an in-progress run. This has been fixed.

Breaking Changes

Yielding run requests for experimental dynamic partitions via run_request_for_partition now throws an error. Instead, users should yield directly instantiated run requests via RunRequest(partition_key=...).
graph_asset and graph_multi_asset now support specifying resource_defs directly (thanks @kmontag42)!

Community Contributions

A new node_info_to_auto_materialize_policy_fn param added to load_assets_from_dbt_* functions. (thanks @askvinni)!
Added partition_key field to RunStatusSensorContext (thanks @pdstrnadJC)!

Experimental

For multi-partitioned assets with a time dimension, the auto-materialize policy now only kicks off materializations for the latest time partition window. Previously, all partitions would be targeted.
Added performance improvements to the multi-asset sensor context’s latest_materialization_records_by_key method.
The GraphQL API for launching a backfill no longer errors when the backfill targets assets instead of a job and the allPartitions argument is provided.

Documentation

Fixed a few typos in various guides.
Fixed a formatting issue in the Automating pipelines guide that was causing a 404.

1.3.1 (core) / 0.19.1 (libraries)

New

Performance improvements when evaluating time-partitioned run requests within sensors and schedules.
[ui] Performance improvements when loading the asset catalog and launchpad for deployments with many time-partitioned assets.

Bugfixes

Fixed an issue where loading a Definitions object that included sensors attached to multiple jobs would raise an error.
Fixed a bug in which Pythonic resources would produce underlying resource values that would fail reference equality checks. This would lead to a conflicting resource version error when using the same Pythonic resource in multiple places.

1.3.0 (core) / 0.19.0 (libraries) "Smooth Operator"

Major Changes since 1.2.0 (core) / 0.18.0 (libraries)

Core

Auto-materialize policies replace the asset reconciliation sensor - We significantly renovated the APIs used for specifying which assets are scheduled declaratively. Compared to build_asset_reconciliation_sensors , AutoMaterializePolicy works across code locations, as well as allow you to customize the conditions under which each asset is auto-materialized. [docs]
Asset backfill page - A new page in the UI for monitoring asset backfills shows the progress of each asset in the backfill.
Clearer labels for tracking changes to data and code - Instead of the opaque “stale” indicator, Dagster’s UI now indicates whether code, upstream data, or dependencies have changed. When assets are in violation of their FreshnessPolicys, Dagster’s UI now marks them as “overdue” instead of “late”.
Auto-materialization and observable source assets - Assets downstream of an observable source asset now use the source asset observations to determine whether upstream data has changed and assets need to be materialized.
Pythonic Config and Resources - The set of APIs introduced in 1.2 is no longer experimental [community memo]. Examples, integrations, and documentation have largely ported to the new APIs. Existing resources and config APIs will continue to be supported for the foreseeable future. Check out migration guide to learn how to incrementally adopt the new APIs.

Docs

Improved run concurrency docs - You asked (in support), and we answered! This new guide is a one-stop-shop for understanding and implementing run concurrency, whether you’re on Dagster Cloud or deploying to your own infrastructure.
Additions to the Intro to Assets tutorial - We’ve added two new sections to the assets tutorial, focused on scheduling and I/O. While we’re close to wrapping things up for the tutorial revamp, we still have a few topics to cover - stay tuned!
New guide about building machine learning pipelines - Many of our users learn best by example - this guide is one way we’re expanding our library of examples. In this guide, we walk you through building a simple machine learning pipeline using Dagster.
Re-organized Dagster Cloud docs - We overhauled how the Dagster Cloud docs are organized, bringing them more in line with the UI.

Since 1.2.7 (core) / 0.18.7 (libraries)

New

Long-running runs can now be terminated after going over a set runtime. See the run termination docs to learn more.
Adds a performance improvement to partition status caching for multi-partitioned assets containing a time dimension.
[ui] Asset groups are now included in global search.
[ui] Assets in the asset catalog have richer status information that matches what is displayed on the asset graph.
[dagster-aws] New AthenaClientResource, ECRPublicResource, RedshiftClientResource, S3Resource, S3FileManagerResource, ConfigurablePickledObjectS3IOManager, SecretsManagerResource follow Pythonic resource system. The existing APIs remain supported.
[dagster-datadog] New DatadogResource follows Pythonic resource system. The existing datadog_resource remains supported.
[dagster-ge] New GEContextResource follows Pythonic resource system. The existing ge_context_resource remains supported.
[dagster-github] New GithubResource follows Pythonic resource system. The existing github_resource remains supported.
[dagster-msteams] New MSTeamsResource follows Pythonic resource system. The existing msteams_resource remains supported.
[dagster-slack] New SlackResource follows Pythonic resource system. The existing slack_resource remains supported.

Bugfixes

Fixed an issue where using pdb.set_trace no longer worked when running Dagster locally using dagster dev or dagit.
Fixed a regression where passing custom metadata on @asset or Out caused an error to be thrown.
Fixed a regression where certain states of the asset graph would cause GQL errors.
[ui] Fixed a bug where assets downstream of source assets would sometimes incorrectly display a “New data” (previously “stale”) tag for assets with materializations generated from ops (as opposed to SDA materializations).
[ui] Fixed a bug where URLs for code locations named pipelines or jobs could lead to blank pages.
[ui] When configuring a partition-mapped asset backfill, helpful context no longer appears nested within the “warnings” section
[ui] For observable source assets,the asset sidebar now shows a “latest observation” instead of a “latest materialization”

Breaking Changes

By default, resources defined on Definitions are now automatically bound to jobs. This will only result in a change in behavior if you a) have a job with no "io_manager" defined in its resource_defs and b) have supplied an IOManager with key "io_manager" to the resource_defs argument of your Definitions. Prior to 1.3.0, this would result in the job using the default filesystem-based IOManager for the key "io_manager". In 1.3.0, this will result in the "io_manager" supplied to your Definitions being used instead. The BindResourcesToJobs wrapper, introduced in 1.2 to simulate this behavior, no longer has any effect.
[dagster-celery-k8s] The default kubernetes namespace for run pods when using the Dagster Helm chart with the CeleryK8sRunLauncher is now the same namespace as the Helm chart, instead of the default namespace. To restore the previous behavior, you can set the celeryK8sRunLauncher.jobNamespace field to the string default.
[dagster-snowflake-pandas] Due to a longstanding issue storing Pandas Timestamps in Snowflake tables, the SnowflakePandasIOManager has historically converted all timestamp data to strings before storing it in Snowflake. Now, it will instead ensure that timestamp data has a timezone, and if not, attach the UTC timezone. This allows the timestamp data to be stored as timestamps in Snowflake. If you have been storing timestamp data using the SnowflakePandasIOManager you can set the store_timestamps_as_strings=True configuration to continue storing timestamps as strings. For more information, and instructions for migrating Snowflake tables to use timestamp types, see the Migration Guide.

Changes to experimental APIs

Pythonic Resources and Config
- Enabled passing RunConfig to many APIs which previously would only accept a config dictionary.
- Enabled passing raw Python objects as resources to many APIs which previously would only accept ResourceDefinition.
- Added the ability to pass execution config when constructing a RunConfig object.
- Introduced more clear error messages when trying to mutate state on a Pythonic config or resource object.
- Improved direct invocation experience for assets, ops, schedules and sensors using Pythonic config and resources. Config and resources can now be passed directly as args or kwargs.
The minutes_late and previous_minutes_late properties on the experimental FreshnesPolicySensorContext have been renamed to minutes_overdue and previous_minutes_overdue, respectively.

Removal of deprecated APIs

[previously deprecated, 0.15.0] metadata_entries arguments to event constructors have been removed. While MetadataEntry still exists and will only be removed in 2.0, it is no longer passable to any Dagster public API — users should always pass a dictionary of metadata values instead.

Experimental

Adds a performance improvement to the multi-asset sensor context’s latest_materialization_records_by_key function.

Documentation

The Google BigQuery tutorial and reference pages have been updated to use the new BigQueryPandasIOManager and BigQueryPySparkIOManager.
The Snowflake tutorial and reference pages have been updated to use the new SnowflakePandasIOManager and SnowflakePySparkIOManager.

Dagster Cloud

Previously, when deprovisioning an agent, code location servers were cleaned up in serial. Now, they’re cleaned up in parallel.

1.2.7 (core) / 0.18.7 (libraries)

New

Resource access (via both required_resource_keys and Pythonic resources) are now supported in observable source assets.
[ui] The asset graph now shows how many partitions of each asset are currently materializing, and blue bands appear on the partition health bar.
[ui] Added a new page to monitor an asset backfill.
[ui] Performance improvement for Runs page for runs that materialize large numbers of assets.
[ui] Performance improvements for Run timeline and left navigation for users with large numbers of jobs or assets.
[ui] In the run timeline, consolidate “Ad hoc materializations” rows into a single row.
[dagster-aws] The EcsRunLauncher now allows you to customize volumes and mount points for the launched ECS task. See the API docs for more information.
[dagster-duckdb, dagster-duckdb-pandas, dagster-duckdb-pyspark] New DuckDBPandasIOManager and DuckDBPySparkIOManager follow Pythonic resource system. The existing duckdb_pandas_io_manager and duckdb_pyspark_io_manager remain supported.
[dagster-gcp, dagster-gcp-pandas, dagster-gcp-pyspark] New BigQueryPandasIOManager and BigQueryPySparkIOManager follow Pythonic resource system. The existing bigquery_pandas_io_manager and bigquery_pyspark_io_manager remain supported.
[dagster-gcp] The BigQuery resource now accepts authentication credentials as configuration. If you pass GCP authentication credentials to gcp_crentials , a temporary file to store the credentials will be created and the GOOGLE_APPLICATION_CREDENTIALS environment variable will be set to the temporary file. When the BigQuery resource is garbage collected, the environment variable will be unset and the temporary file deleted.
[dagster-snowflake, dagster-snowflake-pandas, dagster-snowflake-pyspark] New SnowflakePandasIOManager and SnowflakePySparkIOManager follow Pythonic resource system. The existing snowflake_pandas_io_manager and snowflake_pyspark_io_manager remain supported.

Bugfixes

Fixed an issue where dagster dev would periodically emit a harmless but annoying warning every few minutes about a gRPC server being shut down.
Fixed a schedule evaluation error that occurred when schedules returned a RunRequest(partition_key=...) object.
Fixed a bug that caused errors in the asset reconciliation sensor when the event log includes asset materializations with partitions that aren’t part of the asset’s PartitionsDefinition.
Fixed a bug that caused errors in the asset reconciliation sensor when a partitioned asset is removed.
Fixed an issue where run_request_for_partition would incorrectly raise an error for a job with a DynamicPartitionsDefinition that was defined with a function.
Fixed an issue where defining a partitioned job with unpartitioned assets via define_asset_job would raise an error.
Fixed a bug where source asset observations could not be launched from dagit when the asset graph contained partitioned assets.
Fixed a bug that caused __ASSET_JOB has no op named ... errors when using automatic run retries.
[ui] The asset partition health bar now correctly renders partial failed partitions of multi-dimensional assets in a striped red color.
[ui] Fixed an issue where steps that were skipped due to an upstream dependency failure were incorrectly listed as “Preparing” in the right-hand column of the runs timeline.
[ui] Fixed markdown base64 image embeds.
[ui] Guard against localStorage quota errors when storing launchpad config tabs.
[dagster-aws] Fixed an issue where the EcsRunLauncher would fail to launch runs if the use_current_ecs_task_config field was set to False but no task_definition field was set.
[dagster-k8s] Fixed an issue introduced in 1.2.6 where older versions of the kubernetes Python package were unable to import the package.

Community Contributions

The EcsRunLauncher now allows you to set a capacity provider strategy and customize the ephemeral storage used for launched ECS tasks. See the docs for details. Thanks AranVinkItility!
Fixed an issue where freshness policies were not being correctly applied to assets with key prefixes defined via AssetsDefinition.from_op. Thanks @tghanken for the fix!
Added the minimum_interval_seconds parameter to enable customizing the evaluation interval on the slack run failure sensor, thanks @ldnicolasmay!
Fixed a docs example and updated references, thanks @NicolasPA!

Experimental

The Resource annotation for Pythonic resource inputs has been renamed to ResourceParam in preparation for the release of the feature in 1.3.
When invoking ops and assets that request resources via parameters directly, resources can now be specified as arguments.
Improved various error messages related to Pythonic config and resources.
If the Resources Dagit feature flag is enabled, they will now show up in the overview page and search.

Documentation

Learn how to limit concurrency in your data pipelines with our new guide!
Need some help managing a run queue? Check out the new customizing run queue priority guide.
New tutorial section that adds I/O managers to the tutorial project.

1.2.6 (core) / 0.18.6 (libraries)

Bugfixes

Fixed a GraphQL resolution error which occurred when retrieving metadata for step failures in the event log.

1.2.5 (core) / 0.18.5 (libraries)

New

materialize and materialize_to_memory now both accept a selection argument that allows specifying a subset of assets to materialize.
MultiPartitionsDefinition is no longer marked experimental.
Context methods to access time window partition information now work for MultiPartitionsDefinitions with a time dimension.
Improved the performance of the asset reconciliation sensor when a non-partitioned asset depends on a partitioned asset.
load_assets_from_package_module and similar methods now accept a freshness_policy, which will be applied to all loaded assets.
When the asset reconciliation sensor is scheduling based on freshness policies, and there are observable source assets, the observed versions now inform the data time of the assets.
build_sensor_context and build_multi_asset_sensor_context can now take a Definitions object in place of a RepositoryDefinition
[UI] Performance improvement for loading asset partition statuses.
[dagster-aws] s3_resource now accepts use_ssl and verify configurations.

Bugfixes

Fixed a bug that caused an error to be raised when passing a multi-asset into the selection argument on define_asset_job.
Fixes a graphQL error that displays on Dagit load when an asset’s partitions definition is change from a single-dimensional partitions definition to a MultiPartitionsDefinition.
Fixed a bug that caused backfills to fail when spanning assets that live in different code locations.
Fixed an error that displays when a code location with a MultiPartitionsMapping (experimental) is loaded.
Fixed a bug that caused errors with invalid TimeWindowPartitionMappings to not be bubbled up to the UI.
Fixed an issue where the scheduler would sometimes incorrectly handle spring Daylight Savings Time transitions for schedules running at 2AM in a timezone other than UTC.
Fixed an issue introduced in the 1.2.4 release where running pdb stopped working when using dagster dev.
Fixed an issue where it is was possible to create AssetMaterialization objects with a null AssetKey.
Previously, if you had a TimeWindowPartitionsDefinition with a non-standard cron schedule, and also provided a minute_of_hour or similar argument in build_schedule_from_partitioned_job. Dagster would silently create the wrong cron expression. It now raises an error.
The asset reconciliation sensor now no longer fails when the event log contains materializations that contain partitions that aren’t contained in the asset’s PartitionsDefinition. These partitions are now ignored.
Fixed a regression that prevented materializing dynamically partitioned assets from the UI (thanks @planvin!)
[UI] On the asset graph, the asset health displayed in the sidebar for the selected asset updates as materializations and failures occur.
[UI] The asset partitions page has been adjusted to make materialization and observation event metadata more clear.
[UI] Large table schema metadata entries now display within a modal rather than taking up considerable space on the page.
[UI] Launching a backfill of a partitioned asset with unpartitioned assets immediately upstream no longer shows the “missing partitions” warning.
[dagster-airflow] fixed a bug in the PersistentAirflowDatabase where versions of airflow from 2.0.0 till 2.3.0 would not use the correct connection environment variable name.
[dagster-census] fixed a bug with the poll_sync_run function ofdagster-census that prevented polling from working correctly (thanks @ldincolasmay!)

Deprecations

The run_request_for_partition method on JobDefinition and UnresolvedAssetJobDefinition is now deprecated and will be removed in 2.0.0. Instead, directly instantiate a run request with a partition key via RunRequest(partition_key=...).

Documentation

Added a missing link to next tutorial section (Thanks Mike Kutzma!)

1.2.4 (core) / 0.18.4 (libraries)

New

Further performance improvements to the asset reconciliation sensor.
Performance improvements to asset backfills with large numbers of partitions.
New AssetsDefinition.to_source_assets to method convert a set of assets to SourceAsset objects.
(experimental) Added partition mapping that defines dependency relationships between different MultiPartitionsDefinitions.
[dagster-mlflow] Removed the mlflow pin from the dagster-mlflow package.
[ui] Syntax highlighting now supported in rendered markdown code blocks (from metadata).

Bugfixes

When using build_asset_reconciliation_sensor, in some cases duplicate runs could be produced for the same partition of an asset. This has been fixed.
When using Pythonic configuration for resources, aliased field names would cause an error. This has been fixed.
Fixed an issue where context.asset_partitions_time_window_for_output threw an error when an asset was directly invoked with build_op_context.
[dagster-dbt] In some cases, use of ephemeral dbt models could cause the dagster representation of the dbt dependency graph to become incorrect. This has been fixed.
[celery-k8s] Fixed a bug that caused JSON deserialization errors when an Op or Asset emitted JSON that doesn't represent a DagsterEvent.
Fixed an issue where launching a large backfill while running dagster dev would sometimes fail with a connection error after running for a few minutes.
Fixed an issue where dagster dev would sometimes hang when running Dagster code that attempted to read in input via stdin.
Fixed an issue where runs that take a long time to import code would sometimes continue running even after they were stopped by run monitoring for taking too long to start.
Fixed an issue where AssetSelection.groups() would simultaneously select both source and regular assets and consequently raise an error.
Fixed an issue where BindResourcesToJobs would raise errors encapsulating jobs which had config specified at definition-time.
Fixed Pythonic config objects erroring when omitting optional values rather than specifying None.
Fixed Pythonic config and resources not supporting Enum values.
DagsterInstance.local_temp and DagsterInstance.ephemeral now use object instance scoped local artifact storage temporary directories instead of a shared process scoped one, removing a class of thread safety errors that could manifest on initialization.

Improved direct invocation behavior for ops and assets which specify resource dependencies as parameters, for instance:

class MyResource(ConfigurableResource):
    pass

@op
def my_op(x: int, y: int, my_resource: MyResource) -> int:
    return x + y

my_op(4, 5, my_resource=MyResource())

[dagster-azure] Fixed an issue with an AttributeError being thrown when using the async DefaultAzureCredential (thanks @mpicard)
[ui] Fixed an issue introduced in 1.2.3 in which no log levels were selected by default when viewing Run logs, which made it appear as if there were no logs at all.

Deprecations

The environment_vars argument to ScheduleDefinition is deprecated (the argument is currently non-functional; environment variables no longer need to be whitelisted for schedules)

Community Contributions

Typos fixed in CHANGES.md (thanks @fridiculous)
Links to telemetry docs fixed (thanks @Abbe98)
--path-prefix can now be supplied via Helm chart (thanks @mpicard)

Documentation

New machine learning pipeline with Dagster guide
New example of multi-asset conditional materialization
New tutorial section about scheduling
New images on the Dagster README

1.2.3 (core) / 0.18.3 (libraries)

New

Jobs defined via define_asset_job now auto-infer their partitions definitions if not explicitly defined.
Observable source assets can now be run as part of a job via define_asset_job. This allows putting them on a schedule/sensor.
Added an instance property to the HookContext object that is passed into Op Hook functions, which can be used to access the current DagsterInstance object for the hook.
(experimental) Dynamic partitions definitions can now exist as dimensions of multi-partitions definitions.
[dagster-pandas] New create_table_schema_metadata_from_dataframe function to generate a TableSchemaMetadataValue from a Pandas DataFrame. Thanks @AndyBys!
[dagster-airflow] New option for setting dag_run configuration on the integration’s database resources.
[ui] The asset partitions page now links to the most recent failed or in-progress run for the selected partition.
[ui] Asset descriptions have been moved to the top in the asset sidebar.
[ui] Log filter switches have been consolidated into a single control, and selected log levels will be persisted locally so that the same selections are used by default when viewing a run.
[ui] You can now customize the hour formatting in timestamp display: 12-hour, 24-hour, or automatic (based on your browser locale). This option can be found in User Settings.

Bugfixes

In certain situations a few of the first partitions displayed as “unpartitioned” in the health bar despite being materialized. This has now been fixed, but users may need to run dagster asset wipe-partitions-status-cache to see the partitions displayed.
Starting 1.1.18, users with a gRPC server that could not access the Dagster instance on user code deployments would see an error when launching backfills as the instance could not instantiate. This has been fixed.
Previously, incorrect partition status counts would display for static partitions definitions with duplicate keys. This has been fixed.
In some situations, having SourceAssets could prevent the build_asset_reconciliation_sensor from kicking off runs of downstream assets. This has been fixed.
The build_asset_reconciliation_sensor is now much more performant in cases where unpartitioned assets are upstream or downstream of static-partitioned assets with a large number of partitions.
[dagster-airflow] Fixed an issue were the persistent Airflow DB resource required the user to set the correct Airflow database URI environment variable.
[dagster-celery-k8s] Fixed an issue where run monitoring failed when setting the jobNamespace field in the Dagster Helm chart when using the CeleryK8sRunLauncher.
[ui] Filtering on the asset partitions page no longer results in keys being presented out of order in the left sidebar in some scenarios.
[ui] Launching an asset backfill outside an asset job page now supports partition mapping, even if your selection shares a partition space.
[ui] In the run timeline, date/time display at the top of the timeline was sometimes broken for users not using the en-US browser locale. This has been fixed.

1.2.2 (core) / 0.18.2 (libraries)

New

Dagster is now tested on Python 3.11.

Users can now opt in to have resources provided to Definitions bind to their jobs. Opt in by wrapping your job definitions in BindResourcesToJobs. This will become the default behavior in the future.

@op(required_resource_keys={"foo"})
def my_op(context)
    print(context.foo)

@job
def my_job():
  my_op()

defs = Definitions(
    jobs=BindResourcesToJobs([my_job])
    resources={"foo": foo_resource}

Added dagster asset list and dagster asset materialize commands to Dagster’s command line interface, for listing and materializing software-defined assets.
build_schedule_from_partitioned_job now accepts jobs partitioned with a MultiPartitionsDefinition that have a time-partitioned dimension.
Added SpecificPartitionsPartitionMapping, which allows an asset, or all partitions of an asset, to depend on a specific subset of the partitions in an upstream asset.
load_asset_value now supports SourceAssets.
[ui] Ctrl+K has been added as a keyboard shortcut to open global search.
[ui] Most pages with search bars now sync the search filter to the URL, so it’s easier to bookmark views of interest.
[ui] In the run logs table, the timestamp column has been moved to the far left, which will hopefully allow for better visual alignment with op names and tags.
[dagster-dbt] A new node_info_to_definition_metadata_fn to load_assets_from_dbt_project and load_assets_from_dbt_manifest allows custom metadata to be attached to the asset definitions generated from these methods.
[dagster-celery-k8s] The Kubernetes namespace that runs using the CeleryK8sRunLauncher are launched in can now be configured by setting the jobNamespace field in the Dagster Helm chart under celeryK8sRunLauncherConfig.
[dagster-gcp] The BigQuery I/O manager now accepts timeout configuration. Currently, this configuration will only be applied when working with Pandas DataFrames, and will set the number of seconds to wait for a request before using a retry.
[dagster-gcp] [dagster-snowflake] [dagster-duckdb] The BigQuery, Snowflake, and DuckDB I/O managers now support self-dependent assets. When a partitioned asset depends on a prior partition of itself, the I/O managers will now load that partition as a DataFrame. For the first partition in the dependency sequence, an empty DataFrame will be returned.
[dagster-k8s] k8s_job_op now supports running Kubernetes jobs with more than one pod (Thanks @Taadas).

Bugfixes

Fixed a bug that causes backfill tags that users set in the UI to not be included on the backfill runs, when launching an asset backfill.
Fixed a bug that prevented resume from failure re-execution for jobs that contained assets and dynamic graphs.
Fixed an issue where the asset reconciliation sensor would issue run requests for assets that were targeted by an active asset backfill, resulting in duplicate runs.
Fixed an issue where the asset reconciliation sensor could issue runs more frequently than necessary for assets with FreshnessPolicies having intervals longer than 12 hours.
Fixed an issue where AssetValueLoader.load_asset_value() didn’t load transitive resource dependencies correctly.
Fixed an issue where constructing a RunConfig object with optional config arguments would lead to an error.
Fixed the type annotation on ScheduleEvaluationContext.scheduled_execution_time to not be Optional.
Fixed the type annotation on OpExecutionContext.partition_time_window ****(thanks @elben10).
InputContext.upstream_output.log is no longer None when loading a source asset.
Pydantic type constraints are now supported by the Pythonic config API.
An input resolution bug that occurred in certain conditions when composing graphs with same named ops has been fixed.
Invoking an op with collisions between positional args and keyword args now throws an exception.
async def ops are now invoked with asyncio.run.
TimeWindowPartitionDefinition now throws an error at definition time when passed an invalid cron schedule instead of at runtime.
[ui] Previously, using dynamic partitions with assets that required config would raise an error in the launchpad. This has been fixed.
[ui] The lineage tab loads faster and flickers less as you navigate between connected assets in the lineage graph
[ui] The config YAML editor no longer offers incorrect autcompletion context when you’re beginning a new indented line.
[ui] When viewing the asset details page for a source asset, the button in the top right correctly reads “Observe” instead of “Materialize”
[dagster-dbt] Previously, setting a cron_schedule_timezone inside of the config for a dbt model would not result in that property being set on the generated FreshnessPolicy. This has been fixed.
[dagster-gcp] Added a fallback download url for the GCSComputeLogManager when the session does not have permissions to generate signed urls.
[dagster-snowflake] In a previous release, functionality was added for the Snowflake I/O manager to attempt to create a schema if it did not already exist. This caused an issue when the schema already existed but the account did not have permission to create the schema. We now check if a schema exists before attempting to create it so that accounts with restricted permissions do not error, but schemas can still be created if they do not exist.

Breaking Changes

validate_run_config no longer accepts pipeline_def or mode arguments. These arguments refer to legacy concepts that were removed in Dagster 1.0, and since then there have been no valid values for them.

Experimental

Added experimental support for resource requirements in sensors and schedules. Resources can be specified using required_resource_keys and accessed through the context or specified as parameters:

@sensor(job=my_job, required_resource_keys={"my_resource"})
def my_sensor(context):
    files_to_process = context.my_resource.get_files()
		...

@sensor(job=my_job)
def my_sensor(context, my_resource: MyResource):
    files_to_process = my_resource.get_files()
		...

Documentation

Added a page on asset selection syntax to the Concepts documentation.

1.2.1 (core) / 0.18.1 (libraries)

Bugfixes

Fixed a bug with postgres storage where daemon heartbeats were failing on instances that had not been migrated with dagster instance migrate after upgrading to 1.2.0.

1.2.0 (core) / 0.18.0 (libraries)

Major Changes since 1.1.0 (core) / 0.17.0 (libraries)

Core

Added a new dagster dev command that can be used to run both Dagit and the Dagster daemon in the same process during local development. [docs]
Config and Resources
- Introduced new Pydantic-based APIs to make defining and using config and resources easier (experimental). [Github discussion]
Repository > Definitions [docs]
Declarative scheduling
- The asset reconciliation sensor is now 100x more performant in many situations, meaning that it can handle more assets and more partitions.
- You can now set freshness policies on time-partitioned assets.
- You can now hover over a stale asset to learn why that asset is considered stale.
Partitions
- DynamicPartitionsDefinition allows partitioning assets dynamically - you can add and remove partitions without reloading your definitions (experimental). [docs]
- The asset graph in the UI now displays the number of materialized, missing, and failed partitions for each partitioned asset.
- Asset partitions can now depend on earlier time partitions of the same asset. Backfills and the asset reconciliation sensor respect these dependencies when requesting runs [example].
- TimeWindowPartitionMapping now accepts start_offset and end_offset arguments that allow specifying that time partitions depend on earlier or later time partitions of upstream assets [docs].
Backfills
- Dagster now allows backfills that target assets with different partitions, such as a daily asset which rolls up into a weekly asset, as long as the root assets in the selection are partitioned in the same way.
- You can now choose to pass a range of asset partitions to a single run rather than launching a backfill with a run per partition [instructions].

Integrations

Weights and Biases - A new integration dagster-wandb with Weights & Biases allows you to orchestrate your MLOps pipelines and maintain ML assets with Dagster. [docs]
Snowflake + PySpark - A new integration dagster-snowflake-pyspark allows you to store and load PySpark DataFrames as Snowflake tables using the snowflake_pyspark_io_manager. [docs]
Google BigQuery - A new BigQuery I/O manager and new integrations dagster-gcp-pandas and dagster-gcp-pyspark allow you to store and load Pandas and PySpark DataFrames as BigQuery tables using the bigquery_pandas_io_manager and bigquery_pyspark_io_manager. [docs]
Airflow The dagster-airflow integration library was bumped to 1.x.x, with that major bump the library has been refocused on enabling migration from Airflow to Dagster. Refer to the docs for an in-depth migration guide.
Databricks - Changes:
- Added op factories to create ops for running existing Databricks jobs (create_databricks_run_now_op), as well as submitting one-off Databricks jobs (create_databricks_submit_run_op).
- Added a new Databricks guide.
- The previous create_databricks_job_op op factory is now deprecated.

Docs

Automating pipelines guide - Check out the best practices for automating your Dagster data pipelines with this new guide. Learn when to use different Dagster tools, such as schedules and sensors, using this guide and its included cheatsheet.
Structuring your Dagster project guide - Need some help structuring your Dagster project? Learn about our recommendations for getting started and scaling sustainably.
Tutorial revamp - Goodbye cereals and hello HackerNews! We’ve overhauled our intro to assets tutorial to not only focus on a more realistic example, but to touch on more Dagster concepts as you build your first end-to-end pipeline in Dagster. Check it out here.

Stay tuned, as this is only the first part of the overhaul. We’ll be adding more chapters - including automating materializations, using resources, using I/O managers, and more - in the next few weeks.

Since 1.1.21 (core) / 0.17.21 (libraries)

New

Freshness policies can now be assigned to assets constructed with @graph_asset and @graph_multi_asset.
The project_fully_featured example now uses the built in DuckDB and Snowflake I/O managers.
A new “failed” state on asset partitions makes it more clear which partitions did not materialize successfully. The number of failed partitions is shown on the asset graph and a new red state appears on asset health bars and status dots.
Hovering over “Stale” asset tags in the Dagster UI now explains why the annotated assets are stale. Reasons can include more recent upstream data, changes to code versions, and more.
[dagster-airflow] support for persisting airflow db state has been added with make_persistent_airflow_db_resource this enables support for Airflow features like pools and cross-dagrun state sharing. In particular retry-from-failure now works for jobs generated from Airflow DAGs.
[dagster-gcp-pandas] The BigQueryPandasTypeHandler now uses google.bigquery.Client methods load_table_from_dataframe and query rather than the pandas_gbq library to store and fetch DataFrames.
[dagster-k8s] The Dagster Helm chart now only overrides args instead of both command and args for user code deployments, allowing to include a custom ENTRYPOINT in your the Dockerfile that loads your code.
The protobuf<4 pin in Dagster has been removed. Installing either protobuf 3 or protobuf 4 will both work with Dagster.
[dagster-fivetran] Added the ability to specify op_tags to build_fivetran_assets (thanks @Sedosa!)
@graph_asset and @graph_multi_asset now support passing metadata (thanks @askvinni)!

Bugfixes

Fixed a bug that caused descriptions supplied to @graph_asset and @graph_multi_asset to be ignored.
Fixed a bug that serialization errors occurred when using TableRecord.
Fixed an issue where partitions definitions passed to @multi_asset and other functions would register as type errors for mypy and other static analyzers.
[dagster-aws] Fixed an issue where the EcsRunLauncher failed to launch runs for Windows tasks.
[dagster-airflow] Fixed an issue where pendulum timezone strings for Airflow DAG start_date would not be converted correctly causing runs to fail.
[dagster-airbyte] Fixed an issue when attaching I/O managers to Airbyte assets would result in errors.
[dagster-fivetran] Fixed an issue when attaching I/O managers to Fivetran assets would result in errors.

Database migration

Optional database schema migrations, which can be run via dagster instance migrate:
- Improves Dagit performance by adding a database index which should speed up job run views.
- Enables dynamic partitions definitions by creating a database table to store partition keys. This feature is experimental and may require future migrations.
- Adds a primary key id column to the kvs, daemon_heartbeats and instance_info tables, enforcing that all tables have a primary key.

Breaking Changes

The minimum grpcio version supported by Dagster has been increased to 1.44.0 so that Dagster can support both protobuf 3 and protobuf 4. Similarly, the minimum protobuf version supported by Dagster has been increased to 3.20.0. We are working closely with the gRPC team on resolving the upstream issues keeping the upper-bound grpcio pin in place in Dagster, and hope to be able to remove it very soon.
Prior to 0.9.19, asset keys were serialized in a legacy format. This release removes support for querying asset events serialized with this legacy format. Contact #dagster-support for tooling to migrate legacy events to the supported version. Users who began using assets after 0.9.19 will not be affected by this change.
[dagster-snowflake] The execute_queryand execute_queries methods of the SnowflakeResource now have consistent behavior based on the values of the fetch_results and use_pandas_result parameters. If fetch_results is True, the standard Snowflake result will be returned. If fetch_results and use_pandas_result are True, a pandas DataFrame will be returned. If fetch_results is False and use_pandas_result is True, an error will be raised. If both are False, no result will be returned.
[dagster-snowflake] The execute_queries command now returns a list of DataFrames when use_pandas_result is True, rather than appending the results of each query to a single DataFrame.
[dagster-shell] The default behavior of the execute and execute_shell_command functions is now to include any environment variables in the calling op. To restore the previous behavior, you can pass in env={} to these functions.
[dagster-k8s] Several Dagster features that were previously disabled by default in the Dagster Helm chart are now enabled by default. These features are:
- The run queue (by default, without a limit). Runs will now always be launched from the Daemon.
- Run queue parallelism - by default, up to 4 runs can now be pulled off of the queue at a time (as long as the global run limit or tag-based concurrency limits are not exceeded).
- Run retries - runs will now retry if they have the dagster/max_retries tag set. You can configure a global number of retries in the Helm chart by setting run_retries.max_retries to a value greater than the default of 0.
- Schedule and sensor parallelism - by default, the daemon will now run up to 4 sensors and up to 4 schedules in parallel.
- Run monitoring - Dagster will detect hanging runs and move them into a FAILURE state for you (or start a retry for you if the run is configured to allow retries). By default, runs that have been in STARTING for more than 5 minutes will be assumed to be hanging and will be terminated.
Each of these features can be disabled in the Helm chart to restore the previous behavior.
[dagster-k8s] The experimental k8s_job_op op and execute_k8s_job functions no longer automatically include configuration from a dagster-k8s/config tag on the Dagster job in the launched Kubernetes job. To include raw Kubernetes configuration in a k8s_job_op, you can set the container_config, pod_template_spec_metadata, pod_spec_config, or job_metadata config fields on the k8s_job_op (or arguments to the execute_k8s_job function).
[dagster-databricks] The integration has now been refactored to support the official Databricks API.
- create_databricks_job_op is now deprecated. To submit one-off runs of Databricks tasks, you must now use the create_databricks_submit_run_op.
- The Databricks token that is passed to the databricks_client resource must now begin with https://.

Changes to experimental APIs

[experimental] LogicalVersion has been renamed to DataVersion and LogicalVersionProvenance has been renamed to DataProvenance.
[experimental] Methods on the experimental DynamicPartitionsDefinition to add, remove, and check for existence of partitions have been removed. Refer to documentation for updated API methods.

Removal of deprecated APIs

[previously deprecated, 0.15.0] Static constructors on MetadataEntry have been removed.
[previously deprecated, 1.0.0] DagsterTypeMaterializer, DagsterTypeMaterializerContext, and @dagster_type_materializer have been removed.
[previously deprecated, 1.0.0] PartitionScheduleDefinition has been removed.
[previously deprecated, 1.0.0] RunRecord.pipeline_run has been removed (use RunRecord.dagster_run).
[previously deprecated, 1.0.0] DependencyDefinition.solid has been removed (use DependencyDefinition.node).
[previously deprecated, 1.0.0] The pipeline_run argument to build_resources has been removed (use dagster_run)

Community Contributions

Deprecated iteritems usage was removed and changed to the recommended items within dagster-snowflake-pandas (thanks @sethkimmel3)!
Refactor to simply the new @asset_graph decorator (thanks @simonvanderveldt)!

Experimental

User-computed DataVersions can now be returned on Output
Asset provenance info can be accessed via OpExecutionContext.get_asset_provenance

Documentation

The Asset Versioning and Caching Guide now includes a section on user-provided data versions
The community contributions doc block Picking a github issue was not correctly rendering, this has been fixed (thanks @Sedosa)!

1.1.21 (core) / 0.17.21 (libraries)

New

Further performance improvements for build_asset_reconciliation_sensor.
Dagster now allows you to backfill asset selections that include mapped partition definitions, such as a daily asset which rolls up into a weekly asset, as long as the root assets in your selection share a partition definition.
Dagit now includes information about the cause of an asset’s staleness.
Improved the error message for non-matching cron schedules in TimeWindowPartitionMappings with offsets. (Thanks Sean Han!)
[dagster-aws] The EcsRunLauncher now allows you to configure the runtimePlatform field for the task definitions of the runs that it launches, allowing it to launch runs using Windows Docker images.
[dagster-azure] Add support for DefaultAzureCredential for adls2_resource (Thanks Martin Picard!)
[dagster-databricks] Added op factories to create ops for running existing Databricks jobs (create_databricks_run_now_op), as well as submitting one-off Databricks jobs (create_databricks_submit_run_op). See the new Databricks guide for more details.
[dagster-duckdb-polars] Added a dagster-duckdb-polars library that includes a DuckDBPolarsTypeHandler for use with build_duckdb_io_manager, which allows loading / storing Polars DataFrames from/to DuckDB. (Thanks Pezhman Zarabadi-Poor!)
[dagster-gcp-pyspark] New PySpark TypeHandler for the BigQuery I/O manager. Store and load your PySpark DataFrames in BigQuery using bigquery_pyspark_io_manager.
[dagster-snowflake] [dagster-duckdb] The Snowflake and DuckDB IO managers can now load multiple partitions in a single step - e.g. when a non-partitioned asset depends on a partitioned asset or a single partition of an asset depends on multiple partitions of an upstream asset. Loading occurs using a single SQL query and returns a single DataFrame.

[dagster-k8s] The Helm chart now supports the full kubernetes env var spec for user code deployments. Example:

dagster-user-deployments:
  deployments:
    - name: my-code
      env:
        - name: FOO
          valueFrom:
            fieldFre:
              fieldPath: metadata.uid

If includeConfigInLaunchedRuns is enabled, these env vars will also be applied to the containers for launched runs.

Bugfixes

Previously, if an AssetSelection which matched no assets was passed into define_asset_job, the resulting job would target all assets in the repository. This has been fixed.
Fixed a bug that caused the UI to show an error if you tried to preview a future schedule tick for a schedule built using build_schedule_from_partitioned_job.
When a non-partitioned non-asset job has an input that comes from a partitioned SourceAsset, we now load all partitions of that asset.
Updated the fs_io_manager to store multipartitioned materializations in directory levels by dimension. This resolves a bug on windows where multipartitioned materializations could not be stored with the fs_io_manager.
Schedules and sensors previously timed out when attempting to yield many multipartitioned run requests. This has been fixed.
Fixed a bug where context.partition_key would raise an error when executing on a partition range within a single run via Dagit.
Fixed a bug that caused the default IO manager to incorrectly raise type errors in some situations with partitioned inputs.
[ui] Fixed a bug where partition health would fail to display for certain time window partitions definitions with positive offsets.
[ui] Always show the “Reload all” button on the code locations list page, to avoid an issue where the button was not available when adding a second location.
[ui] Fixed a bug where users running multiple replicas of dagit would see repeated Definitions reloaded messages on fresh page loads.
[ui] The asset graph now shows only the last path component of linked assets for better readability.
[ui] The op metadata panel now longer capitalizes metadata keys
[ui] The asset partitions page, asset sidebar and materialization dialog are significantly smoother when viewing assets with a large number of partitions (100k+)
[dagster-gcp-pandas] The Pandas TypeHandler for BigQuery now respects user provided location information.
[dagster-snowflake] ProgrammingError was imported from the wrong library, this has been fixed. Thanks @herbert-allium!

Experimental

You can now set an explicit logical version on Output objects rather than using Dagster’s auto-generated versions.
New get_asset_provenance method on OpExecutionContext allows fetching logical version provenance for an arbitrary asset key.
[ui] - you can now create dynamic partitions from the partition selection UI when materializing a dynamically partitioned asset

Documentation

Added an example of how to use dynamic asset partitions - in the examples/assets_dynamic_partitions folder
New tutorial for using the BigQuery I/O manager.
New reference page for BigQuery I/O manager features.
New automating data pipelines guide

1.1.20 (core) / 0.17.20 (libraries)

New

The new @graph_asset and @graph_multi_asset decorators make it more ergonomic to define graph-backed assets.
Dagster will auto-infer dependency relationships between single-dimensionally partitioned assets and multipartitioned assets, when the single-dimensional partitions definition is a dimension of the MultiPartitionsDefinition.
A new Test sensor / Test schedule button that allows you to perform a dry-run of your sensor / schedule. Check out the docs on this functionality here for sensors and here for schedules.
[dagit] Added (back) tag autocompletion in the runs filter, now with improved query performance.
[dagit] The Dagster libraries and their versions that were used when loading definitions can now be viewed in the actions menu for each code location.
New bigquery_pandas_io_manager can store and load Pandas dataframes in BigQuery.
[dagster-snowflake, dagster-duckdb] SnowflakeIOManagers and DuckDBIOManagers can now default to loading inputs as a specified type if a type annotation does not exist for the input.
[dagster-dbt] Added the ability to use the “state:” selector

[dagster-k8s] The Helm chart now supports the full kubernetes env var spec for Dagit and the Daemon. E.g.

dagit:
  env:
    - name: “FOO”
      valueFrom:
        fieldRef:
          fieldPath: metadata.uid

Bugfixes

Previously, graphs would fail to resolve an input with a custom type and an input manager key. This has been fixed.
Fixes a bug where negative partition counts were displayed in the asset graph.
Previously, when an asset sensor did not yield run requests, it returned an empty result. This has been updated to yield a meaningful message.
Fix an issue with a non-partitioned asset downstream of a partitioned asset with self-dependencies causing a GQL error in dagit.
[dagster-snowflake-pyspark] Fixed a bug where the PySparkTypeHandler was incorrectly loading partitioned data.
[dagster-k8s] Fixed an issue where run monitoring sometimes failed to detect that the kubernetes job for a run had stopped, leaving the run hanging.

Documentation

Updated contributor docs to reference our new toolchain (ruff, pyright).
(experimental) Documentation for the dynamic partitions definition is now added.
[dagster-snowflake] The Snowflake I/O Manager reference page now includes information on working with partitioned assets.

1.1.19 (core) / 0.17.19 (libraries)

New

The FreshnessPolicy object now supports a cron_schedule_timezone argument.
AssetsDefinition.from_graph now supports a freshness_policies_by_output_name parameter.
The @asset_sensor will now display an informative SkipReason when no new materializations have been created since the last sensor tick.
AssetsDefinition now has a to_source_asset method, which returns a representation of this asset as a SourceAsset.
You can now designate assets as inputs to ops within a graph or graph-based job. E.g.

from dagster import asset, job, op

@asset
def emails_to_send():
    ...

@op
def send_emails(emails) -> None:
    ...

@job
def send_emails_job():
    send_emails(emails_to_send.to_source_asset())

Added a --dagit-host/-h argument to the dagster dev command to allow customization of the host where Dagit runs.
[dagster-snowflake, dagster-duckdb] Database I/O managers (Snowflake, DuckDB) now support static partitions, multi-partitions, and dynamic partitions.

Bugfixes

Previously, if a description was provided for an op that backed a multi-asset, the op’s description would override the descriptions in Dagit for the individual assets. This has been fixed.
Sometimes, when applying an input_manager_key to an asset’s input, incorrect resource config could be used when loading that input. This has been fixed.
Previously, the backfill page errored when partitions definitions changed for assets that had been backfilled. This has been fixed.
When displaying materialized partitions for multipartitioned assets, Dagit would error if a dimension had zero partitions. This has been fixed.
[dagster-k8s] Fixed an issue where setting runK8sConfig in the Dagster Helm chart would not pass configuration through to pods launched using the k8s_job_executor.
[dagster-k8s] Previously, using the execute_k8s_job op downstream of a dynamic output would result in k8s jobs with duplicate names being created. This has been fixed.
[dagster-snowflake] Previously, if the schema for storing outputs didn’t exist, the Snowflake I/O manager would fail. Now it creates the schema.

Breaking Changes

Removed the experimental, undocumented asset_key, asset_partitions, and asset_partitions_defs arguments on Out.
@multi_asset no longer accepts Out values in the dictionary passed to its outs argument. This was experimental and deprecated. Instead, use AssetOut.
The experimental, undocumented top_level_resources argument to the repository decorator has been renamed to _top_level_resources to emphasize that it should not be set manually.

Community Contributions

load_asset_values now accepts resource configuration (thanks @Nintorac!)
Previously, when using the UPathIOManager, paths with the "." character in them would be incorrectly truncated, which could result in multiple distinct objects being written to the same path. This has been fixed. (Thanks @spenczar!)

Experimental

[dagster-dbt] Added documentation to our dbt Cloud integration to cache the loading of software-defined assets from a dbt Cloud job.

Documentation

Revamped the introduction to the Partitions concepts page to make it clear that non-time-window partitions are equally encouraged.
In Navigation, moved the Partitions and Backfill concept pages to their own section underneath Concepts.
Moved the Running Dagster locally guide from Deployment to Guides to reflect that OSS and Cloud users can follow it.
Added a new guide covering asset versioning and caching.

1.1.18 (core) / 0.17.18 (libraries)

New

Assets with time-window PartitionsDefinitions (e.g. HourlyPartitionsDefinition, DailyPartitionsDefinition) may now have a FreshnessPolicy.
[dagster-dbt] When using load_assets_from_dbt_project or load_assets_from_dbt_manifest with dbt-core>=1.4, AssetMaterialization events will be emitted as the dbt command executes, rather than waiting for dbt to complete before emitting events.
[dagster-aws] When run monitoring detects that a run unexpectedly crashed or failed to start, an error message in the run’s event log will include log messages from the ECS task for that run to help diagnose the cause of the failure.
[dagster-airflow] added make_ephemeral_airflow_db_resource which returns a ResourceDefinition for a local only airflow database for use in migrated airflow DAGs
Made some performance improvements for job run queries which can be applied by running dagster instance migrate.
[dagit] System tags (code + logical versions) are now shown in the asset sidebar and on the asset details page.
[dagit] Source assets that have never been observed are presented more clearly on the asset graph.
[dagit] The number of materialized and missing partitions are shown on the asset graph and in the asset catalog for partitioned assets.
[dagit] Databricks-backed assets are now shown on the asset graph with a small “Databricks” logo.

Bugfixes

Fixed a bug where materializations of part of the asset graph did not construct required resource keys correctly.
Fixed an issue where observable_source_asset incorrectly required its function to have a context argument.
Fixed an issue with serialization of freshness policies, which affected cacheable assets that included these policies such as those from dagster-airbyte
[dagster-dbt] Previously, the dagster-dbt integration was incompatible with dbt-core>=1.4. This has been fixed.
[dagster-dbt] load_assets_from_dbt_cloud_job will now avoid unnecessarily generating docs when compiling a manifest for the job. Compile runs will no longer be kicked off for jobs not managed by this integration.
Previously for multipartitioned assets, context.asset_partition_key returned a string instead of a MultiPartitionKey. This has been fixed.
[dagster-k8s] Fixed an issue where pods launched by the k8s_job_executor would sometimes unexpectedly fail due to transient 401 errors in certain kubernetes clusters.
Fix a bug with nth-weekday-of-the-month handling in cron schedules.

Breaking Changes

[dagster-airflow] load_assets_from_airflow_dag no longer creates airflow db resource definitions, as a user you will need to provide them on Definitions directly

Deprecations

The partitions_fn argument of the DynamicPartitionsDefinition class is now deprecated and will be removed in 2.0.0.

Community Contributions

[dagster-wandb] A new integration with Weights & Biases allows you to orchestrate your MLOps pipelines and maintain ML assets with Dagster.
Postgres has been updated to 14.6 for Dagster’s helm chart. Thanks @DustyShap!
Typo fixed in docs. Thanks @C0DK!
You can now pass a callable directly to asset (rather than using @asset in decorator form) to create an asset. Thanks @ns-finkelstein!

Documentation

New “Asset versioning and caching” guide
[dagster-snowflake] The Snowflake guide has been updated to include PySpark dataframes
[dagster-snowflake] The Snowflake guide has been updated to include private key authentication
[dagster-airflow] The Airflow migration guide has been update to include more detailed instructions and considerations for making a migration

1.1.17 (core) / 0.17.17 (libraries)

New

The dagster-airflow library as been moved to 1.x.x to denote the stability of its api's going forward.
[dagster-airflow] make_schedules_and_jobs_from_airflow_dag_bag has been added to allow for more fine grained composition of your transformed airflow DAGs into Dagster.
[dagster-airflow] Airflow dag task retries and retry_delay configuration are now converted to op RetryPolicies with all make_dagster_* apis.

Bugfixes

Fixed an issue where cron schedules using a form like 0 5 * * mon#1 to execute on a certain day of the week each month executed every week instead.
[dagit] Fixed an issue where the asset lineage page sometimes timed out while loading large asset graphs.
Fixed an issue where the partitions page sometimes failed to load for partitioned asset jobs.

Breaking Changes

[dagster-airflow] The use_airflow_template_context, mock_xcom and use_ephemeral_airflow_db params have been dropped, by default all make_dagster_* apis now use a run-scoped airflow db, similiar to how use_ephemeral_airflow_db worked.
[dagster-airflow] make_airflow_dag has been removed.
[dagster-airflow] make_airflow_dag_for_operator has been removed.
[dagster-airflow] make_airflow_dag_containerized has been removed.
[dagster-airflow] airflow_operator_to_op has been removed.
[dagster-airflow] make_dagster_repo_from_airflow_dags_path has been removed.
[dagster-airflow] make_dagster_repo_from_airflow_dag_bag has been removed.
[dagster-airflow] make_dagster_repo_from_airflow_example_dags has been removed.
[dagster-airflow] The naming convention for ops generated from airflow tasks has been changed to ${dag_id}__${task_id} from airflow_${task_id}_${unique_int}.
[dagster-airflow] The naming convention for jobs generated from airflow dags has been changed to ${dag_id} from airflow_${dag_id}.

1.1.15 (core) / 0.17.15 (libraries)

New

Definitions now accepts Executor instances in its executor argument, not just ExecutorDefinitions.
@multi_asset_sensor now accepts a request_assets parameter, which allows it to directly request that assets be materialized, instead of requesting a run of a job.
Improved the performance of instantiating a Definitions when using large numbers of assets or many asset jobs.
The job passed to build_schedule_from_partitioned_job no longer needs to have a partitions_def directly assigned to it. Instead, Dagster will infer from the partitions from the assets it targets.
OpExecutionContext.asset_partition_keys_for_output no longer requires an argument to specify the default output.
The “Reload all” button on the Code Locations page in Dagit will now detect changes to a pyproject.toml file that were made while Dagit was running. Previously, Dagit needed to be restarted in order for such changes to be shown.
get_run_record_by_id has been added to DagsterInstance to provide easier access to RunRecord objects which expose the start_time and end_time of the run.
[dagit] In the “Materialize” modal, you can now choose to pass a range of asset partitions to a single run rather than launching a backfill.
[dagster-docker] Added a docker_container_op op and execute_docker_container_op helper function for running ops that launch arbitrary Docker containers. See the docs for more information.
[dagster-snowflake-pyspark] The Snowflake I/O manager now supports PySpark DataFrames.
[dagster-k8s] The Docker images include in the Dagster Helm chart are now built on the most recently released python:3.x-slim base image.

Bugfixes

Previously, the build_asset_reconciliation_sensor could time out when evaluating ticks over large selections of assets, or assets with many partitions. A series of performance improvements should make this much less likely.
Fixed a bug that caused a failure when using run_request_for_partition in a sensor that targeted multiple jobs created via define_asset_job.
The cost of importing dagster has been reduced.
Issues preventing “re-execute from failure” from working correctly with dynamic graphs have been fixed.
[dagit] In Firefox, Dagit no longer truncates text unnecessarily in some cases.
[dagit] Dagit’s asset graph now allows you to click “Materialize” without rendering the graph if you have too many assets to display.
[dagit] Fixed a bug that stopped the backfill page from loading when assets that had previously been backfilled no longer had a PartitionsDefinition.
[dagster-k8s] Fixed an issue where k8s_job_op raised an Exception when running pods with multiple containers.
[dagster-airbyte] Loosened credentials masking for Airbyte managed ingestion, fixing the Hubspot source, thanks @joel-olazagasti!
[dagster-airbyte] When using managed ingestion, Airbyte now pulls all source types available to the instance rather than the workspace, thanks @emilija-omnisend!
[dagster-airbyte] Fixed an issue which arose when attaching freshness policies to Airbyte assets and using the multiprocessing executor.
[dagster-fivetran] Added the ability to force assets to be output for all specified Fivetran tables during a sync in the case that a sync’s API outputs are missing one or more tables.

Breaking Changes

The asset_keys and asset_selection parameters of the experimental @multi_asset_sensor decorator have been replaced with a monitored_assets parameter. This helps disambiguate them from the new request_assets parameter.

Community Contributions

A broken docs link in snowflake_quickstart has been fixed, thanks @clayheaton!
Troubleshooting help added to helm deployment guide, thanks @adam-bloom!
StaticPartitionMapping is now serializable, thanks @AlexanderVR!
[dagster-fivetran] build_fivetran_assets now supports group_name , thanks @toddy86!
[dagster-azure] AzureBlobComputeManager now supports authentication via DefaultAzureCredential, thanks @mpicard!

Experimental

[dagster-airflow] added a new api load_assets_from_airflow_dag that creates graph-backed, partitioned, assets based on the provided Airflow DAG.

1.1.14 (core) / 0.17.14 (libraries)

New

Large asset graphs can now be materialized in Dagit without needing to first enter an asset subset. Previously, if you wanted to materialize every asset in such a graph, you needed to first enter * as the asset selection before materializing the assets.
Added a pin of the sqlalchemy package to <2.0.0 due to a breaking change in that version.
Added a pin of the dbt-core package to <1.4.0 due to breaking changes in that release that affected the Dagster dbt integration. We plan to remove this pin in the next release.
Added a pin of the jupyter-client package to <8.0 due to an issue with the most recent release causing hangs while running dagstermill ops.

Bugfixes

Fixed an issue where the Backfills page in Dagit didn't show partition status for some backfills.
[dagster-aws] Fixed an issue where the EcsRunLauncher sometimes waited much longer than intended before retrying after a failure launching a run.
[dagster-mysql] Fixed an issue where some implementations of MySQL storage were raising invalid version errors.

1.1.13 (core) / 0.17.13 (libraries)

Bugfixes

The nux section of dagster.yaml config has been fixed.
Changes when heartbeats occur in the daemon to avoid crashes in certain conditions.
Fixed an issue where passing a workspace file as an argument into the dagster dev command raised an error
[dagit] Fixes an issue with asset names being truncated by long asset descriptions in the asset catalog, making them impossible to click.
[dagit] The backfill page no longer fails to load if any of the asset backfills had assets that were partitioned at the time of the backfill but are no longer partitioned.

1.1.12 (core) / 0.17.12 (libraries)

Bugfixes

[dagit] Fixes a "maximum call stack size exceeded" error when viewing a materialization of a root asset in Asset Details

1.1.11 (core) / 0.17.11 (libraries)

New

Added a new dagster dev command that can be used to run both Dagit and the Dagster daemon in the same process during local development. See the new Running Dagster Locally guide in the docs for more information.
Added instructions for installing the dagster package on M1 and M2 Macs that avoids installation errors when building the grpcio package. See the Installing Dagster guide in the docs for more information.
create_repository_using_definitions_args has been added for users to backport their repository definitions to the new Definitions API
When running Dagit on your local machine, a prompt will now appear that allows you to optionally enter an email address to receive Dagster security updates or subscribe to the Dagster newsletter. This prompt can be dismissed in the UI, or permanently disabled by adding the following to your dagster.yaml file:

nux:
  enabled: false

The grpcio pin in Dagster to <1.48.1 has been restored for Python versions 3.10 and 3.11, due to upstream issues in the grpcio package causing hangs in Dagster.
[dagit] Improved query performance on Scheduled Runs page.
[dagit] The "Materialize" button now allows you to add tags to asset materialization runs. If your assets do not require config or partitions, you may need to shift-click "Materialize".
[dagit] The kind tags and logos shown on assets in the Asset Graph now appear in other parts of Dagit so it's easier to understand your assets.
[dagit] Selecting a materialization event on the Asset Details page now shows links to the upstream materialzations ("Source Data") that were incorporated into that version of the asset.
[dagit] Added or improved document (browser tab) titles throughout Dagit.
[dagster-snowflake] Snowflake resource and IO manager now support private key authentication with unencrypted keys
[dagster-dbt] The op created when using load_assets_from_dbt* is now configurable, allowing you to pass in specific parameters to the underlying dbt command (such as --full-refresh). To do so, supply config of the form {"ops": {"run_dbt_<abcde>": {"config": {"full_refresh": True}}}} when defining your asset job, or in Dagit.

Bugfixes

For time-partitioned assets, the build_asset_reconciliation_sensor will now only materialize partitions from the past day. Previously, if a new asset was added with a large number of missing partitions, a run for each of the missing partitions would be launched immediately.
A variety of performance improvements to the build_asset_reconciliation_sensor, which should help significantly speed up sensor evaluation in cases where there is a large number of assets or partitions.
[dagit] Fixed broken code location names in the “Definitions” filter dialog accessible from the left navigation.
[dagit] The Backfills pages in Dagit no longer crash when your backfills span tens of thousands of partition keys
[dagit] The asset graph now links to the failed run, not the last successful materialization, when assets are shown in a "Failed" state.

Breaking Changes

Strings with escaped characters are now invalid substrings of partition keys.

Experimental

[dagster-dbt] Added a utility to cache compilations from dbt Cloud jobs, allowing software-defined assets to be loaded faster from dbt Cloud jobs.

Community Contributions

In dagster-airbyte, keys containing credentials are now considered a secret (thanks joel-olazagasti)!

Documentation

A new example of using the branching IO manager has been added.

1.1.10 (core) / 0.17.10 (libraries)

New

The selection argument of define_asset_job now accepts lists of AssetKeys or AssetsDefinitions.
RunRequest now takes a stale_assets_only flag that filters the full set of assets that would be materialized by a job to stale assets only. This can be used in schedules and sensors.
Dagit will now choose a different open port on the local machine to run on when no port is specified to the dagit command and the default port 3000 is already in use.
The grpcio pin in Dagster to <1.48.1 has been removed for Python versions 3.10 and 3.11. Python 3.7, 3.8, and 3.9 are still pinned to <1.48.1 due to a bug in the grpc library that is causing the process to sometimes hang.
When it is likely that an op process was killed due to running out of memory, a clearer error message is now displayed in Dagit.
When a sensor tick fails due to taking longer than 60 seconds to execute, a clearer error message is displayed on the sensor timeline in Dagit.
When you view compute logs on a run in Dagit, we now locally track whether you choose the stdout or stderr tab. The next time you view compute logs, you will see that tab first by default.
The executor and loggers arguments on Definitions are no longer experimental.
[dagster-dbt] When json_log_format is set to False when using the dbt_cli_resource, logs will be emitted at the appropriate log level in some situations. Previously, all logs would be emitted at the INFO level.
[dagster-snowflake] The Snowflake IO Manager and Snowflake Resource now support private key authentication. Thanks Josh Taylor!
[dagster-airbyte] Users can now specify freshness policies when generating Airbyte assets.
[dagster-airbyte] When using managed Airbyte ingestion, users can now specify a destination table prefix.

Bugfixes

Fixed a bug that caused backfills launched from the asset graph page not to work with code locations running versions of Dagster less than 1.1.8.
Fixed a bug that reverted to the default partition mappings in situations where asset dependencies were resolved based on group instead of asset key.
The way skips are propagate through the graph when using dynamic outputs are used has been fixed.
Fixed a bug affecting the download link for cloud-based compute log manager implementations (e.g. dagster-azure / dagster-aws / dagster-gcp)
Fixed a bug that would cause errors when using build_asset_reconciliation_sensor with asset graphs that contained references to source assets without the associated SourceAsset objects (which may happen when using load_assets_from_dbt_*).
[dagit] Fixed an issue where an error appeared in dagit when a code server stopped and restarted.
[dagit] Previously, when restarting the dagit process, the Dagit frontend kept cached versions of certain queries even after the code location finished loading. This could lead to display of stale versions of jobs or other code objects. These objects will now be correctly retrieved anew from the backend.
[dagster-dbt] Fixed a bug with the DbtManifestAssetSelection which could result in KeyErrors when selecting from projects with sources defined.
[dagster-k8s] Fixed a bug where disabling run worker crash recovery by setting maxResumeRunAttempts to 0 in the Helm chart had no effect.
[dagster-airflow] Fixed a bug where transformed Airflow DAG schedules would always use UTC for their timezone.

Breaking Changes

[dagit] The /instance and /workspace path prefixes were removed in previous version, but redirects were left in place. These redirects have now been removed.

Community Contributions

The new StaticPartitionMapping enables explicitly defining the dependencies between partitions in two StaticPartitionsDefinitions. Thanks Alexander VR!
Fixed a typo in the Dagster Instance documentation header - thanks Cushnir Grigore!
Fixed a typo in the Dagster Instance documentation body - thanks Chris Zubak-Skees!
Fixed docstring for static_partitioned_config - thanks Sylvain Lesage!
Fix dead link in the docs to the Slack community - thanks Emil Christensen!

Documentation

The Ops and jobs tutorial has been moved to the Guides section. Clicking "Tutorial" in the sidenav will open the Assets tutorial.

1.1.9 (core) / 0.17.9 (libraries)

Bugfixes

Fixed an issue which would cause errors when using built-in generic types in annotations for asset and op parameters.
Fixed an unintentional dependency on Pydantic >=1.8 which lacked a pin, now older versions of the package may be used.

1.1.8 (core) / 0.17.8 (libraries)

New

Asset backfills launched from the asset graph now respect partition mappings. For example, if partition N of asset2 depends on partition N-1 of asset1, and both of those partitions are included in a backfill, asset2’s partition N won’t be backfilled until asset1’s partition N-1 has been materialized.
Asset backfills launched from the asset graph will now only materialize each non-partitioned asset once - after all upstream partitions within the backfill have been materialized.
Executors can now be configured with a tag_concurrency_limits key that allows you to specify limits on the number of ops with certain tags that can be executing at once within a single run. See the docs for more information.
ExecuteInProcessResult, the type returned by materialize, materialize_to_memory, and execute_in_process, now has an `as

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Bugfixes​

Documentation​

1.12.2 (core) / 0.28.2 (libraries)​

New​

Dagster Plus​

1.12.1 (core) / 0.28.1 (libraries)​

New​

Bugfixes​

Dagster Plus​

1.12.0 (core) / 0.28.0 (libraries)​

Major changes since 1.11.0 (core) / 0.27.0 (libraries)​

UI​

Components​

Simplified Deployment​

Core Orchestration​

Support & Docs​

Changes since 1.11.16 (core) / 0.27.16 (libraries)​

New​

Bugfixes​

Documentation​

1.11.16 (core) / 0.27.16 (libraries)​

New​

Bugfixes​

1.11.15 (core) / 0.27.15 (libraries)​

New​

Bugfixes​

Documentation​

Dagster Plus​

1.11.14 (core) / 0.27.14 (libraries)​

New​

Bugfixes​

1.11.13 (core) / 0.27.13 (libraries)​

New​

Bugfixes​

1.11.12 (core) / 0.27.12 (libraries)​

New​

Bugfixes​

Dagster Plus​

1.11.11 (core) / 0.27.11 (libraries)​

New​

Bugfixes​

1.11.10 (core) / 0.27.10 (libraries)​

New​

Bugfixes​

Documentation​

Dagster Plus​

1.11.9 (core) / 0.27.9 (libraries)​

New​

Bugfixes​

Dagster Plus​

1.11.8 (core) / 0.27.8 (libraries)​

New​

Bugfixes​

1.11.7 (core) / 0.27.7 (libraries)​

New​

Deprecations​

1.11.6 (core) / 0.27.6 (libraries)​

New​

Bugfixes​

Documentation​

Dagster Plus​

1.11.5 (core) / 0.27.5 (libraries)​

1.12.8 (core) / 0.28.8 (libraries)

New

Bugfixes

1.12.7 (core) / 0.28.7 (libraries)

New

Bugfixes

Dagster Plus

1.12.6 (core) / 0.28.6 (libraries)

New

Bugfixes

1.12.5 (core) / 0.28.5 (libraries)

New

1.12.4 (core) / 0.28.4 (libraries)

New

Bugfixes

Documentation

1.12.3 (core) / 0.28.3 (libraries)

New

Bugfixes

Documentation

1.12.2 (core) / 0.28.2 (libraries)

New

Dagster Plus

1.12.1 (core) / 0.28.1 (libraries)

New

Bugfixes

Dagster Plus

1.12.0 (core) / 0.28.0 (libraries)

Major changes since 1.11.0 (core) / 0.27.0 (libraries)

UI

Components

Simplified Deployment

Core Orchestration

Support & Docs

Changes since 1.11.16 (core) / 0.27.16 (libraries)

New

Bugfixes

Documentation

1.11.16 (core) / 0.27.16 (libraries)

New

Bugfixes

1.11.15 (core) / 0.27.15 (libraries)

New

Bugfixes

Documentation

Dagster Plus

1.11.14 (core) / 0.27.14 (libraries)

New

Bugfixes

1.11.13 (core) / 0.27.13 (libraries)

New

Bugfixes

1.11.12 (core) / 0.27.12 (libraries)

New

Bugfixes

Dagster Plus

1.11.11 (core) / 0.27.11 (libraries)

New

Bugfixes

1.11.10 (core) / 0.27.10 (libraries)

New

Bugfixes

Documentation

Dagster Plus

1.11.9 (core) / 0.27.9 (libraries)

New

Bugfixes

Dagster Plus

1.11.8 (core) / 0.27.8 (libraries)

New

Bugfixes

1.11.7 (core) / 0.27.7 (libraries)

New

Deprecations

1.11.6 (core) / 0.27.6 (libraries)

New

Bugfixes

Documentation

Dagster Plus

1.11.5 (core) / 0.27.5 (libraries)