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https://issues.apache.org/jira/browse/MAPREDUCE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13435420#comment-13435420
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Alejandro Abdelnur commented on MAPREDUCE-4421:
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This seems more a general YARN AM issue than a MR issue.
How about tweaking YARN so a client can specify a {{yarn.am.lib.path}}
property, which would be a FileSystem accessible to all NMs (typically HDFS)?
Then YARN would use that similarly to distributed cache entries, localizing all
JARs before bootstrapping the AM & tasks.
> 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: Arun C Murthy
>
> 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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