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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