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From "Arun Dobriyal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-3500) To add instrumentation to capture if there is skew in reducers
Date Tue, 25 Sep 2012 18:44:07 GMT

    [ https://issues.apache.org/jira/browse/HIVE-3500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13463111#comment-13463111
] 

Arun Dobriyal commented on HIVE-3500:
-------------------------------------

Yeah, will make sure to submit it. 
                
> To add instrumentation to capture if there is skew in reducers
> --------------------------------------------------------------
>
>                 Key: HIVE-3500
>                 URL: https://issues.apache.org/jira/browse/HIVE-3500
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 0.10.0
>            Reporter: Arun Dobriyal
>            Assignee: Arun Dobriyal
>            Priority: Minor
>         Attachments: Hive-3500.1.patch.txt
>
>
> To add the reducer skew information. To log min/max/mean/(standard deviation) of the
reducers run times in the QueryPlan. 

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