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From "Rajesh Balamohan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16208) Vectorization: ProcessingModeHashAggregate::sumBatchSize is never reset
Date Fri, 17 Mar 2017 12:19:41 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15929844#comment-15929844
] 

Rajesh Balamohan commented on HIVE-16208:
-----------------------------------------

+1.

> Vectorization: ProcessingModeHashAggregate::sumBatchSize is never reset
> -----------------------------------------------------------------------
>
>                 Key: HIVE-16208
>                 URL: https://issues.apache.org/jira/browse/HIVE-16208
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Gopal V
>            Assignee: Gopal V
>            Priority: Minor
>         Attachments: HIVE-16208.1.patch
>
>
> When processing >2x the hash-table size in the vectorized group-by, the check for
fall-back to streaming is wrong because {{sumBatchSize*minReduction}} is not reset when processing
the next split.



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