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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4647) We should only unjar jobjar if there is a lib directory in it.
Date Mon, 10 Sep 2012 15:44:07 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452090#comment-13452090
] 

Todd Lipcon commented on MAPREDUCE-4647:
----------------------------------------

Is this a regression of MAPREDUCE-967, more or less?
                
> We should only unjar jobjar if there is a lib directory in it.
> --------------------------------------------------------------
>
>                 Key: MAPREDUCE-4647
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4647
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2
>    Affects Versions: 0.23.3
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>
> For backwards compatibility we recently added made is so we would unjar the job.jar and
add anything to the classpath in the lib directory of that jar.  But this also slows job startup
down a lot if the jar is large.  We should only unjar it if actually doing so would add something
new to the classpath.

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