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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-9248) Vectorization : Tez Reduce vertex not getting vectorized when GROUP BY is Hash mode
Date Sun, 04 Jan 2015 01:53:34 GMT
Matt McCline created HIVE-9248:
----------------------------------

             Summary: Vectorization : Tez Reduce vertex not getting vectorized when GROUP
BY is Hash mode
                 Key: HIVE-9248
                 URL: https://issues.apache.org/jira/browse/HIVE-9248
             Project: Hive
          Issue Type: Bug
          Components: Tez, Vectorization
    Affects Versions: 0.14.0
            Reporter: Matt McCline
            Assignee: Matt McCline
            Priority: Critical


Under Tez and Vectorization, ReduceWork not getting vectorized unless it GROUP BY operator
is MergePartial.  Add valid cases where GROUP BY is Hash (and presumably there are downstream
reducers that will do MergePartial).



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