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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2021/12/03 16:56:26 UTC

[GitHub] [airflow] jmaldon1 edited a comment on pull request #17405: Add XCom.clear so it's hookable in custom XCom backend

jmaldon1 edited a comment on pull request #17405:
URL: https://github.com/apache/airflow/pull/17405#issuecomment-985666459


   @sighingnow @MatrixManAtYrService Looking for an explanation of `clear`.
   
   When is the `clear` method called in the DAG process?
   How are we avoiding the case that we clear the data from the external database, but the tasks fails and has to rerun?
   If the task reruns, won't it need to query for the data again, but if we deleted it already, then it wont be there anymore.


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