thomasrebele opened a new pull request, #6567:
URL: https://github.com/apache/hive/pull/6567

   ### What changes were proposed in this pull request?
   Implement decorrelation of semi-joins, if they contain the correlation 
variables only in the left-hand side.
   
   ### Why are the changes needed?
   This avoids an IndexOutOfBoundsException.
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   ### How was this patch tested?
   Q file test
   


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