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https://issues.apache.org/jira/browse/MAPREDUCE-4647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Joseph Evans updated MAPREDUCE-4647:
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Attachment: MR-4647.txt
This patch should add in the missing functionality. I have updated a few unit
tests, but I also have tested this manually on a small cluster with security
off. I verified that it is doing what is expected.
> 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
> Attachments: MR-4647.txt
>
>
> 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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