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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-6084) Load MR Configuration from distributed cache rather than individual node
Date Thu, 11 Sep 2014 03:25:33 GMT
Junping Du created MAPREDUCE-6084:
-------------------------------------

             Summary: Load MR Configuration from distributed cache rather than individual
node
                 Key: MAPREDUCE-6084
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6084
             Project: Hadoop Map/Reduce
          Issue Type: Bug
    Affects Versions: 2.5.0
            Reporter: Junping Du
            Assignee: Junping Du


For rolling upgrade YARN & MapReduce component, we already support to submit jobs against
different versions of mapreduce jars based on distributed cache (please refer MAPREDUCE-4421).
However, this could bring up some potential issues if old jar cannot find a new added class
with new configurations that upgrade together with Hadoop components. For details, please
refer the proposal in attachments. 



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