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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9248) Vectorization : Tez Reduce vertex not getting vectorized when GROUP BY is Hash mode
Date Thu, 15 Jan 2015 21:39:35 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14279325#comment-14279325
] 

Matt McCline commented on HIVE-9248:
------------------------------------

Ok, thanks [~ashutoshc], I will work on the related test failure and come back with a new
patch.

> 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
>         Attachments: HIVE-9248.01.patch, HIVE-9248.02.patch, HIVE-9248.03.patch, HIVE-9248.04.patch
>
>
> 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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