[jira] [Created] (HIVE-22975) Optimise TopNKeyFilter with boundary checks

[Rajesh Balamohan (Jira)]

Rajesh Balamohan created HIVE-22975:
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             Summary: Optimise TopNKeyFilter with boundary checks
                 Key: HIVE-22975
                 URL: https://issues.apache.org/jira/browse/HIVE-22975
             Project: Hive
          Issue Type: Improvement
          Components: Hive
            Reporter: Rajesh Balamohan
         Attachments: Screenshot 2020-03-04 at 3.26.45 PM.jpg

!Screenshot 2020-03-04 at 3.26.45 PM.jpg|width=507,height=322!

 

It would be good to add boundary checks to reduce cycles spent on topN filter. 
E.g Q43 spends good amount of time in topN.



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