Apache Airflow: Airflow 3.1.1

📦 PyPI: https://pypi.org/project/apache-airflow/3.1.1/ 📚 Docs: https://airflow.apache.org/docs/apache-airflow/3.1.1/ 🛠️ Release Notes: https://airflow.apache.org/docs/apache-airflow/3.1.1/release_notes.html 🪶 Sources: https://airflow.apache.org/docs/apache-airflow/3.1.1/installation/installing-from-sources.html 🐳 Docker Image: "docker pull apache/airflow:3.1.1" 🚏 Constraints: https://github.com/apache/airflow/tree/constraints-3.1.1 ## Bug Fixes - Fix execution failures with NULL ``dag_run.conf`` during upgrades from earlier versions (#56729) - Fix memory leak in remote logging connection cache (#56695) - Fix DAG processor crash with pre-import module optimization enabled (#56779) - Fix scheduler crash with email notifications (#56431) - Fix scheduler crash during 3.0 to 3.1 migration when ``retry_delay`` is ``None`` (#56236) - Fix task retries executing wrong method after deferred state (#56737) - Fix retry callbacks not executing for externally killed tasks (#56607) - Fix custom timetable ``generate_run_id`` not called for manual triggers (#56699) - Fix ``KeyError`` when accessing ``retry_delay`` on ``MappedOperator`` without explicit value (#56605) - Fix ``task-sdk`` connection error handling to match ``airflow-core`` behavior (#56653) - Fix topological sort for Grid View (#56963) - Fix ``get_ti_count`` and ``get_task_states`` access in callback requests (#56860) - Fix ``Connection`` or ``Variable`` access in Server context (#56602) - Fix ``.airflowignore`` order precedence (#56832) - Fix migration errors for Pydantic 2.12.0 compatibility (#56581) - Fix: Correctly parse JSON for ``--dag_run_conf`` in ``airflow dags backfill`` CLI (#56599) - UI: Fix note modal does not change markdown text after change (#56092) - UI: Fix Grid for cleared runs when tasks were removed (#56297) - UI: Fix log text selection contrast in light mode (#56893) - UI: Fix Advanced Search button overlap in DAG List View (#56777) - UI: Fix view for many DAG tags (#55604) - UI: Fix asset name text overflow in DAGs list view (#55914) - UI: Fix auto refresh when only 1 dag run is running (#56649) - UI: Fix UI keeps poking pools API when no permission (#56626) - UI: Fix multi-line drag selection in task log view (#56300) - UI: Fix task named ``'root'`` causes blue screen on hover (#56926) - UI: Fix cron expression display for ``Day-of-Month`` and ``Day-of-Week`` conflicts (#56255) - UI: Fix Grid view performance issues with ``SerializedDagModel`` query optimization (#56938) - Fix: Gracefully handle FastAPI plugins with empty ``url_prefix`` (#55262) - Fix: Allow mapped tasks to accept zero-length inputs on rerun (#56162) - Fix: Enable API to clear task instances by specifying map indexes (#56945) - Fix: Add ``max_retry_delay`` to ``MappedOperator`` model (#56951) - Fix: Use name passed to ``@asset`` decorator when fetching the asset (#56611) - UI: Add English as a fallback locale (#56934) ## Miscellaneous - Add Greek UI translation (#56724) - Add Thai UI translation (#56946) - Add Polish translations (#56825) - Close German translation gaps for full UI translation (#56981) - Fix Hebrew typo in translations (#56168) - Improve DAG and task missing error handling in callbacks (#56725) - Improve UI retry strategy on client errors (#56638) - Improve get dag grid structure endpoint speed (#56937) - Optimize grid structure query with ``DISTINCT`` for ``dag_version_id`` lookup (#56565) - Add configurable timeout for Execution API requests (#56969) - Prevent unnecessary kubernetes client imports in workers (#56692) - Lazy import ``PodGenerator`` for deserialization (#56733) - Serialize pydantic models in json mode for JSON serialization compatibility (#56939) - Update authentication to handle JWT token in backend (#56677) - Update bulk API permission check to handle ``action_on_existence`` (#56672) - Migrate ``CreateAssetEventsBody`` to Pydantic v2 ``ConfigDict`` (#56772) - Restore timetable ``active_runs_limit`` check (#56922) - Add ``is_favorite`` to UI dags list (#56341) - Add ``executor``, ``hostname``, and ``queue`` columns to ``TaskInstances`` page (#55922) - Add resize function for DAG Documentation (#56344) - Add optional pending dag runs check to auto refresh (#56648) - Add auto refresh to backfill banner (#56774) - UI: Add Expand/Collapse all to ``XComs`` page (#56285) - UI: Update recent runs bar chart and improve responsiveness (#56314) - UI: Update duration format to show milliseconds (#56961) - UI: Modify min width for task names in grid view (#56952) - UI: Use Task Display Name in Graph if existing (#56511) - UI: Use Task Display Name in Grid if existing (#56410) - UI: Use TI duration from database instead of UI calculated (#56329) - UI: Make DAG Run ID visible in DAG Header Card (#56409) - UI: Modify calendar cell colors (#56161) - UI: Modify log highlight color (#56894) - UI: Fix show appropriate time units in grid view (#56414) - UI: Reduce default columns of DAG Run and Task Instance lists (#55968) - UI: Add expand and collapse functionality for task groups (#56334) - UI: Avoid using rem for icons for Safari compatibility (#56304) - UI: Add ANSI support to log viewer (#56721) - UI: Support Dynamic UI Alerts (#56259) - UI: Disable Gantt view by default (#56242) - UI: Use welcome on dashboard instead of airflow (#56074) - UI: Improve clipboard button visibility with hover effect (#56484) - UI: Allow sub-pages in React UI plugins (#56485) - Include task instance id in log printed by supervisor (#56383) - Emit log stream stopped warning as ``ndjson`` (#56480) - Detect interactive terminal to set colored logging with override env variable support (#56157) - Add back deprecation warning for ``sla_miss_callback`` (#56127) - Move ``natsort`` dependency to ``airflow-core`` (#56582) - Added missing ``babel`` dependency in Task SDK (#56592) - Remove unused ``dagReports`` API endpoint (#56621) ## Doc Only Changes - Improve API sort documentation (#56617) - Improve API doc for ordering query param (#55988) - Add Audit Logs detailed documentation (#56719) - Update serializer document to reflect latest changes in codebase (#56857) - Update ASF logos in documentation to the new Oak logo (#56601) - Enhance ``triggering_asset_event`` retrieval documentation in DAGs (#56957) - Remove self-reference in best practices documentation (#56111) - Fix supported Python versions in README (#56734) **Full Changelog**: https://github.com/apache/airflow/compare/3.1.0...3.1.1