You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2021/12/03 20:28:11 UTC

[GitHub] [airflow] MatrixManAtYrService commented on pull request #17405: Add XCom.clear so it's hookable in custom XCom backend

MatrixManAtYrService commented on pull request #17405:
URL: https://github.com/apache/airflow/pull/17405#issuecomment-985806910


   My impression is that `clear` is called on a task's xcoms before it runs. This is to prevent data from a prior rerun from influencing the current task execution. This way a task can assume that its XComs are always in a blank slate, whether it's a run or a rerun.
   
   I'll have an opportunity to verify this impression soon and I'll be sure to report back and correct it if I'm wrong.  I'll also let you know if I stumble across an understanding of `delete`


-- 
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: commits-unsubscribe@airflow.apache.org

For queries about this service, please contact Infrastructure at:
users@infra.apache.org