dstandish opened a new issue, #46202:
URL: https://github.com/apache/airflow/issues/46202

   ### Body
   
   Once we've restored uniqueness on logical date, backfill logic can be made a 
bit simpler.
   
   We should go through, and in places where we guard against the possibility 
of multiple runs for a given logical date, we should simplify the logic.  
Additionally, in places where we do locking to avoid the creation of multiple 
concurrent runs for a given logical date, we should just rely on the fact that 
there is a unique constraint to protect us.
   
   (reference: 
https://cwiki.apache.org/confluence/display/AIRFLOW/Option+2+clarification+doc+WIP)
   
   
   
   ### Committer
   
   - [x] I acknowledge that I am a maintainer/committer of the Apache Airflow 
project.


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