mridulm edited a comment on pull request #30650:
URL: https://github.com/apache/spark/pull/30650#issuecomment-771271706


   I am fine with preserving the behavior - but it looks broken to me.
   Just to clarify the behavior as I understand -
   
   * If there is insufficient resources to run the entire taskset at (some) 
highest locality level, and there is atleast one task that can be launched at 
that level - we will end up always failing the barrier taksset (unless delay is 
set to 0) ?
   
   If yes, as a follow up, do we want to make delay as 0 for barrier tasksets ?
   And if delay is 0, I am assuming the benefits of this PR will apply to 
barrier tasksets as well (in legacy) ?
   Thoughts ?


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