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https://issues.apache.org/jira/browse/MAPREDUCE-4990?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated MAPREDUCE-4990:
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Attachment: mr-4990.patch
Trivial patch that checks if the log is debug enabled before logging.
> Construct debug strings conditionally in
> ShuffleHandler.Shuffle#sendMapOutput()
> -------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4990
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4990
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 2.0.3-alpha, 0.23.5
> Reporter: Karthik Kambatla
> Assignee: Karthik Kambatla
> Priority: Trivial
> Attachments: mr-4990.patch
>
>
> In {{#sendMapOutput()}}, the debug statements are not wrapped in the
> customary {{#isDebugEnabled()}} condition. Given this piece of code is
> critical for performance, it would be nice to fix it.
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