dheerenmohta opened a new pull request, #72480: URL: https://github.com/apache/airflow/pull/72480
Both the parent and child DAGs in `example_external_task_marker_dag.py` had `schedule=None`, so independent manually-triggered runs got mismatched logical dates and `ExternalTaskSensor` (which matches by logical date by default) could never find the parent's `ExternalTaskMarker` task instance — exactly as reported. Sets both DAGs to the same `schedule=timedelta(minutes=30)` and documents why the schedule must match and must not be `None`. closes: #13681 --- ##### Was generative AI tooling used to co-author this PR? - [X] Yes — Claude Code (Sonnet 5) Generated-by: Claude Code (Sonnet 5) following [the guidelines](https://github.com/apache/airflow/blob/main/contributing-docs/05_pull_requests.rst#gen-ai-assisted-contributions) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
