[jira] [Created] (HIVE-6222) Make Vector Group By operator abandon grouping if too many distinct keys

[Remus Rusanu (JIRA)]

Remus Rusanu created HIVE-6222:
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             Summary: Make Vector Group By operator abandon grouping if too 
many distinct keys
                 Key: HIVE-6222
                 URL: https://issues.apache.org/jira/browse/HIVE-6222
             Project: Hive
          Issue Type: Sub-task
            Reporter: Remus Rusanu
            Assignee: Remus Rusanu
            Priority: Minor


Row mode GBY is becoming a pass-through if not enough aggregation occurs on the 
map side, relying on the shuffle+reduce side to do the work. Have VGBY do the 
same.



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