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https://issues.apache.org/jira/browse/HIVE-3500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465161#comment-13465161
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Carl Steinbach commented on HIVE-3500:
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@Arun: Thanks for putting up with my review requests.
+1. Will commit if tests pass.
> 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
> Components: Query Processor
> Affects Versions: 0.10.0
> Reporter: Arun Dobriyal
> Assignee: Arun Dobriyal
> Priority: Minor
> Attachments: Hive-3500.1.patch.txt, Hive-3500.2.patch.txt,
> Hive-3500.3.patch.txt, Hive-3500.4.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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