zhiyong-ong opened a new issue, #27462: URL: https://github.com/apache/airflow/issues/27462
### Apache Airflow version 2.4.2 ### What happened In the scenario where we have 2 dags, 1 dag dependent on the other by having an ExternalTaskMarker on the parent dag pointing to the child dag and we have some number of mapped tasks in the child dag that have been expanded (map_index is not -1). If we were to clear the parent dag, the child dag's mapped tasks will NOT be cleared. It will not appear in the "Task instances to be cleared" list ### What you think should happen instead I believe the behaviour should be having the child dag's mapped tasks cleared when the parent dag is cleared. ### How to reproduce 1. Create a parent dag with an ExternalTaskMarker 2. Create a child dag which has some ExternalTaskSensor that the ExternalTaskMarker is pointing to 3. Add any number of mapped tasks downstream of that ExternalTaskSensor 4. Clear the parent dag's ExternalTaskMarker (or any task upstream of it) ### Operating System Mac OS Monterey 12.6 ### Versions of Apache Airflow Providers _No response_ ### Deployment Official Apache Airflow Helm Chart ### Deployment details _No response_ ### Anything else _No response_ ### Are you willing to submit PR? - [X] Yes I am willing to submit a PR! ### Code of Conduct - [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md) -- 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]
