raphaelauv opened a new pull request, #39173:
URL: https://github.com/apache/airflow/pull/39173

   If I have a lot of TriggerDagRunOperator in failed stated ( where some 
failed before triggering the dag_run and some after ) for any reason ( airflow 
worker unclean stop .., zombie task ... )
   
   then if I clear all of them , some will be running then success and others 
will directly fail because dag_run already exists and was correctly trigger
   
   So it's painful to manage this operator at real scaling ( thousands of runs )
   
   with this option we can clear the operator and it will not fail in case the 
dag_run was correctly trigger


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