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https://issues.apache.org/jira/browse/MAPREDUCE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13783333#comment-13783333
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Hitesh Shah commented on MAPREDUCE-4421:
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[~jlowe] Thanks for the clarification. I believe the performance issues should
hold regardless of any filesystem implementation used as long as the
distributed cache layer ends up correctly interpreting the permissions to the
appropriate LocalResource visibility.
+1. Latest patch looks good to me.
Let me know if you are waiting on anyone else to chime in on this. If not,
please feel free to go ahead and commit or I shall commit later today.
> Remove dependency on deployed MR jars
> -------------------------------------
>
> Key: MAPREDUCE-4421
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4421
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 2.0.0-alpha
> Reporter: Arun C Murthy
> Assignee: Jason Lowe
> Attachments: MAPREDUCE-4421-2.patch, MAPREDUCE-4421-3.patch,
> MAPREDUCE-4421-4.patch, MAPREDUCE-4421.patch, MAPREDUCE-4421.patch
>
>
> Currently MR AM depends on MR jars being deployed on all nodes via implicit
> dependency on YARN_APPLICATION_CLASSPATH.
> We should stop adding mapreduce jars to YARN_APPLICATION_CLASSPATH and,
> probably, just rely on adding a shaded MR jar along with job.jar to the
> dist-cache.
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