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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4521) mapreduce.user.classpath.first incompatibility with 0.20/1.x
Date Tue, 16 Oct 2012 21:59:04 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13477386#comment-13477386
] 

Robert Joseph Evans commented on MAPREDUCE-4521:
------------------------------------------------

+1 the patch looks good I'll check it in.
                
> mapreduce.user.classpath.first incompatibility with 0.20/1.x
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-4521
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4521
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.23.1, 2.0.0-alpha
>            Reporter: Jason Lowe
>            Assignee: Ravi Prakash
>         Attachments: MAPREDUCE-4521.patch
>
>
> In Hadoop 0.20 or 1.x, jobs can specify the user's classpath should appear first by setting
the property mapreduce.user.classpath.first to true in the job configuration.  However in
Hadoop 0.23 or 2.x, this has no effect, as the corresponding property there is mapreduce.job.user.classpath.first.

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