Review Request 68967: HIVE-20660: Group by statistics estimation could be improved by bounding the total number of rows to source table

[Vineet Garg]

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Review request for hive and Ashutosh Chauhan.


Bugs: HIVE-20660
    https://issues.apache.org/jira/browse/HIVE-20660


Repository: hive-git


Description
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See JIRA


Diffs
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  ql/src/java/org/apache/hadoop/hive/ql/exec/OperatorUtils.java 456786c240 
  
ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java
 1da6d52750 
  ql/src/test/queries/clientpositive/annotate_stats_groupby.q 081f057053 
  ql/src/test/results/clientpositive/annotate_stats_groupby.q.out 932e208097 


Diff: https://reviews.apache.org/r/68967/diff/1/


Testing
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Thanks,

Vineet Garg