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Posted to mapreduce-issues@hadoop.apache.org by "Sandy Ryza (JIRA)" <ji...@apache.org> on 2013/07/02 04:48:21 UTC

[jira] [Commented] (MAPREDUCE-5365) Set mapreduce.job.classloader to true by default

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5365?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13697437#comment-13697437 ] 

Sandy Ryza commented on MAPREDUCE-5365:
---------------------------------------

Right.  Thanks for the correction.
                
> Set mapreduce.job.classloader to true by default
> ------------------------------------------------
>
>                 Key: MAPREDUCE-5365
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5365
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 2.0.5-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-5365.patch
>
>
> MAPREDUCE-1700 introduced the mapreduce.job.classpath option, which uses a custom classloader to separate system classes from user classes.  It seems like there are only rare cases when a user would not want this on, and that it should enabled by default.

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