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https://issues.apache.org/jira/browse/MAPREDUCE-6220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486999#comment-14486999
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Yang Hao commented on MAPREDUCE-6220:
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Now, I have understood that that the stderr is very helpful. How about add an
parameter if the task's standout can be forbid
> To forbid stderr and stdout for MapReduce job
> ---------------------------------------------
>
> Key: MAPREDUCE-6220
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6220
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 2.6.0
> Reporter: Yang Hao
> Assignee: Yang Hao
> Attachments: MAPREDUCE-6220.patch
>
>
> System.out and System.error is a ugly way to print log, and many times it
> would do harm to Hadoop cluster. So we can forbid it
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