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https://issues.apache.org/jira/browse/MAPREDUCE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13723033#comment-13723033
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Sandy Ryza commented on MAPREDUCE-4421:
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bq. Yes, it does if it can. It depends upon the visibility of the item being
localized. If it's PUBLIC the resource will be cached and reused among all
users and all jobs. If PRIVATE the resource will be cached only per-user but
reused between jobs for that user. If APPLICATION then it will only be
localized for a single job. See LocalResourceVisibility and
ClientDistributedCacheManager.determineCacheVisibilities for some details.
Ok awesome.
bq. The javadoc is correct in that even for the APPLICATION...
Makes sense. Could still be a little more clear, but I'll take my complaints
somewhere else.
I think my only other question is about the config name. Should it not be
mapreduce.job.framework.path to make it consistent with other MR configs?
> 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.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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