bolkedebruin commented on issue #6370: AIRFLOW-5701: Don't clear xcom 
explicitly before execution
URL: https://github.com/apache/airflow/pull/6370#issuecomment-546637296
 
 
   So what happens if the task ran successfully first and then was cleared? 
Does that clear XCOM. It should IMHO. 
   
   If clearing did not clear the xcom values that was a design mistake. 
Idempotency should be guaranteed. So the proper change then would have been to 
fix that. 
   
   So I understand what you are trying to accomplish but I'm not convinced this 
is the proper way. Convince me otherwise please :-)

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