leanken commented on pull request #29104:
URL: https://github.com/apache/spark/pull/29104#issuecomment-659774403


   BroadcastNullAwareHashJoinExecNode do i need to put Single Column keyword 
into the naming of the new ExecNode, because as above context mentioned, this 
optimize is only targeting to single column not in subquery case, specify for 
LeftAnti join with Or(EqualTo(a=b), IsNull(EqualTo(a=b))))
   
   Seeking for naming advice. @agrawaldevesh 


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