Apache Airflow 2.1.4

Source available — automated, not human-reviewed

Component: airflow · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

📄 .MD

✨ Features 2 ⚡ Improvements 5 🔧 Bug Fixes 6

⚡ Executive Summary (TL;DR)

Apache Airflow 2.1.4. Source highlight: Fix deprecation error message rather than silencing it (#18126)

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Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

✨ New Features & Capabilities (2)

Update version added fields in airflow/config_templates/config.yml (#18128)
Separate Installing from sources section and add more details (#18171)

⚡ Performance & Enhancements (5)

Improve the description of how to handle dynamic task generation (#17963)
Improve cross-links to operators and hooks references (#17622)
Improves quick-start docker-compose warnings and documentation (#18164)
Doc: Improve installing from sources (#18194)
Improves installing from sources pages for all components (#18251)

🔧 Bug Fixes & Patches (6)

Fix deprecation error message rather than silencing it (#18126)
Limit the number of queued dagruns created by the Scheduler (#18065)
Fix ``DagRun`` execution order from queued to running not being properly followed (#18061)
Fix ``max_active_runs`` not allowing moving of queued dagruns to running (#17945)
Avoid redirect loop for users with no permissions (#17838)
Avoid endless redirect loop when user has no roles (#17613)

📄 View Raw Release Notes (Original Developer Log)

### Bug Fixes - Fix deprecation error message rather than silencing it (#18126) - Limit the number of queued dagruns created by the Scheduler (#18065) - Fix ``DagRun`` execution order from queued to running not being properly followed (#18061) - Fix ``max_active_runs`` not allowing moving of queued dagruns to running (#17945) - Avoid redirect loop for users with no permissions (#17838) - Avoid endless redirect loop when user has no roles (#17613) - Fix log links on graph TI modal (#17862) - Hide variable import form if user lacks permission (#18000) - Improve dag/task concurrency check (#17786) - Fix Clear task instances endpoint resets all DAG runs bug (#17961) - Fixes incorrect parameter passed to views (#18083) (#18085) - Fix Sentry handler from ``LocalTaskJob`` causing error (#18119) - Limit ``colorlog`` version (6.x is incompatible) (#18099) - Only show Pause/Unpause tooltip on hover (#17957) - Improve graph view load time for dags with open groups (#17821) - Increase width for Run column (#17817) - Fix wrong query on running tis (#17631) - Add root to tree refresh url (#17633) - Do not delete running DAG from the UI (#17630) - Improve discoverability of Provider packages' functionality - Do not let ``create_dagrun`` overwrite explicit ``run_id`` (#17728) - BugFix: Regression on pid reset to allow task start after heartbeat (#17333) - Set task state to failed when pod is DELETED while running (#18095) - Advises the kernel to not cache log files generated by Airflow (#18054) - Sort adopted tasks in ``_check_for_stalled_adopted_tasks`` method (#18208) - Fix ``DagRunState`` enum query for ``MySQLdb`` driver (#17886) ### Doc only changes - Update version added fields in airflow/config_templates/config.yml (#18128) - Improve the description of how to handle dynamic task generation (#17963) - Improve cross-links to operators and hooks references (#17622) - Doc: Fix replacing Airflow version for Docker stack (#17711) - Make the providers operators/hooks reference much more usable (#17768) - Update description about the new ``connection-types`` provider meta-data - Suggest to use secrets backend for variable when it contains sensitive data (#17319) - Improves quick-start docker-compose warnings and documentation (#18164) - Separate Installing from sources section and add more details (#18171) - Doc: Use ``closer.lua`` script for downloading sources (#18179) - Doc: Improve installing from sources (#18194) - Improves installing from sources pages for all components (#18251)

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