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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4421) Remove dependency on deployed MR jars
Date Wed, 25 Sep 2013 21:51:06 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jason Lowe updated MAPREDUCE-4421:
----------------------------------

    Attachment: MAPREDUCE-4421-2.patch

Thanks for the feedback, Hitesh.  I updated the patch with a separate documentation page about
the current state of deploying MapReduce via HDFS, limitations of that approach, and how mapreduce.application.framework.path
and mapreduce.application.classpath interact.  I also updated the description of those configs
in mapred-default.xml.

I filed MAPREDUCE-5534 to track the config handling issue.
                
> 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.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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