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Posted to mapreduce-issues@hadoop.apache.org by "Yang Hao (JIRA)" <ji...@apache.org> on 2015/02/03 08:00:47 UTC

[jira] [Commented] (MAPREDUCE-6220) To forbid stderr and stdout for MapReduce job

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14302863#comment-14302863 ] 

Yang Hao commented on MAPREDUCE-6220:
-------------------------------------

I'm wondering in which case the oozie may use the stderr or stdout, can you give an example?

> 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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