Hey fellow Airflowers, The release candidate for Apache Airflow Python Client 3.4.0rc1 is now available for testing!
This email is calling for a vote on the release, which will last at least 72 hours, from Mon, Nov 9, 2026 at 12:00 PM UTC until Thursday, Nov 12, 2026 at 12:00 PM UTC, and until 3 binding +1 votes have been received. Consider this my (binding) +1. Airflow Client 3.4.0rc1 is available at: https://dist.apache.org/repos/dist/dev/airflow/clients/python/3.4.0rc1/ The apache_airflow_client-3.4.0.tar.gz is an sdist release that contains INSTALL instructions, and also is the official source release. The apache_airflow_client-3.4.0-py3-none-any.whl is a binary wheel release that pip can install. Those packages do not contain .rc* version as, when approved, they will be released as the final version. The rc packages are also available at PyPI (with rc suffix) and you can install it with pip as usual: https://pypi.org/project/apache-airflow-client/3.4.0rc1/ Public keys are available at: https://dist.apache.org/repos/dist/release/airflow/KEYS Only votes from PMC members are binding, but all members of the community are encouraged to test the release and vote with "(non-binding)". The test procedure for PMC members is described in: https://github.com/apache/airflow/blob/main/dev/README_RELEASE_PYTHON_CLIENT.md\#verify-the-release-candidate-by-pmc-members The test procedure for contributors and members of the community who would like to test this RC is described in: https://github.com/apache/airflow/blob/main/dev/README_RELEASE_PYTHON_CLIENT.md\#verify-the-release-candidate-by-contributors *Changelog:* ## New Features: - Let plugins add their own actions to Dag, run and task instance rows (#75427) - Add an API endpoint comparing two stored Dag versions (#73322) - Allow filtering the Dag runs list by Dag tags (#70861) - Add a draining state for graceful Dag pausing (#72407) - Add bulk pause, drain and unpause actions to the Dags list (#73055) - Add a Dag bundle detail endpoint listing the files in a bundle (#73009) - Add an `is_scheduled` filter to the REST API (#72029) - Add an API endpoint for backfill Dag run entries (#67381) - Add a bundle-version parameter to the Dag run trigger endpoint (#61550) - Add an exact-match `uri` filter to `GET /assets` (#69489) - Add `partition_key` and `partition_key_regexp_pattern` filters for asset events (#64610) - Add extra-field filtering for asset events (#64611) - Add filters and pagination to the jobs list (#68616) - Add an Asset Tab plugin (#69986) - Add React plugin support to Dag and task overviews (#69992) - Add `owner_display_name` substring and prefix filters to the Dag list (#70583) - Add a team column and filter to the Dag run and task instance lists (#70241) - Add a team column and filter to the jobs list (#73295) - Add a team column and filter to the XComs list (#72158) - Add a team column and filter to the audit log (#71916) - Add a team filter to the Human-in-the-loop task instances listing (#73726) - Add Task Loops: expose loop iterations and outcomes via `loop_id`/`iteration` filters and a `LoopIterationResponse` (#74354) - Read current task executions by exact loop region (`region_id`/`region_index`) and try (#74350) - Clear selected task-loop work and regenerate only what was replaced (#74349) - Describe a task at a specific Dag version via the task endpoint (#74365) - Filter task instances by `loop_id` and a single loop pass (#74931) ## Improvements: - Expose the retry deadline on task instances and reset run fields when a retry starts (#76028) - Surface the retry-policy decision on task instances (#73030) - Attribute log, asset-event and asset-state writes to the task attempt (#74347) - Expose an `in_loop` flag on task instances (#74352) - Give every mapped expansion a loop region, including a `409` on region conflicts (#74346) - Let loop gates record human-readable decisions (#74932) - Number task loop iterations from one instead of zero (#75260) - Deprecate cyclic TaskGroup dependencies, adding a `task group cycle` Dag warning (#73746) - Scope plugin views on any entity field, not a fixed criteria set (#74278) - Allow scoping plugin tabs to specific Dags and tasks (#69148) - Add a `team_name` attribute to plugins for multi-team (#69502) - Allow a Job to be associated with several teams (#73561) - Expand the health endpoint reporting (#70416) - Add `source_reference` and `language` to the warning, import-error and Dag source models (#72474) - Add a `duplicate dag id` Dag warning type (#68791) - Show Dag bundle versions and refresh times (#72909) - Show the owning team in asset dependencies (#71446) - Show the owning team on Dag, Dag run and task instance detail responses (#70312) - Add `owner_display_name` to the audit log (#68833) - Return a `file_token` on Dag import errors for requesting a reparse (#72896) - Allow explicit runs to drain a paused Dag (#73763) - Type `asset_expression` in the REST API so consumers need not cast through unknown (#67725) - Document HTTP statuses that route helpers raise (#74027) - Keep OpenAPI error responses in sync with the statuses routes raise (#71647) - Document favorite Dag's 409 and return a readable conflict message (#73411) - Make `latest_dag_version` a required field on the Dag details response (#74247) ## Bug Fixes: - Clear retry-policy state when a task instance is cleared (#75646) - Reject non-positive `max_active_runs` when creating a backfill (#75320) - Reject blank pool names and variable keys in the REST API (#75258) - Fix HTTP 500 when ordering the Dag list by state or start date (#75148) - Refuse a Human-in-the-loop response for a request the task has since replaced (#74982) - Filter the jobs `is_alive` check in SQL so pagination stays correct (#73684) - Discard a task instance's stored task-state values when it is cleared (#72100) - Clear all task instances in a task group, not just the first page (#73547) - Require a request body on the asset materialize endpoint (#73328) - Hide unreadable assets in the asset expression served by `next_run_assets` (#72864) - Stop reporting components as degraded after an instance restart (#73222) - Return asset events for Dag runs without a start date (#71379) - Fix the Dag detail HTTP 500 for Dags without a `fileloc` (#69110)
