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https://issues.apache.org/jira/browse/MAPREDUCE-2537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039974#comment-13039974
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Luke Lu commented on MAPREDUCE-2537:
------------------------------------

This is actually not the right fix. It basically redirect stdout to .log which 
is not the right thing to do. Currently in our logs dir, you'll see both .log 
and .out files. You'll notice that .log rolls daily but .out doesn't.

Although yarn-daemon.sh defines YARN_ROOT_LOGGER as INFO,DRFA it's not being 
used to define -Dhadoop.root.logger which can then be picked up by 
log4j.properties. 

> MR-279: The RM writes its log to yarn-mapred-resourcemanager-<RM_Host>.out
> --------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2537
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2537
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>            Priority: Minor
>         Attachments: MR-2537-v1.patch
>
>


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