Rajesh Balamohan created HIVE-22924:
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             Summary: Optimise 
VectorGroupByOperator::prepareBatchAggregationBufferSets 
                 Key: HIVE-22924
                 URL: https://issues.apache.org/jira/browse/HIVE-22924
             Project: Hive
          Issue Type: Bug
          Components: Hive
            Reporter: Rajesh Balamohan
         Attachments: Screenshot 2020-02-24 at 1.40.02 PM.jpg

{{VectorHashKeyWrapperGeneral::equals}} comparison becomes expensive in 
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorGroupByOperator.java#L496]

 

!Screenshot 2020-02-24 at 1.40.02 PM.jpg|width=494,height=328!



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