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Posted to mapreduce-issues@hadoop.apache.org by "Junping Du (JIRA)" <ji...@apache.org> on 2014/09/11 05:25:33 UTC

[jira] [Created] (MAPREDUCE-6084) Load MR Configuration from distributed cache rather than individual node

Junping Du created MAPREDUCE-6084:
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             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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