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https://issues.apache.org/jira/browse/YARN-2265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055798#comment-14055798
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Junping Du commented on YARN-2265:
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Actually, this need to be moved to MAPREDUCE project...

> ShuffleHandler DB schema should be versioned with compatible/incompatible 
> changes
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-2265
>                 URL: https://issues.apache.org/jira/browse/YARN-2265
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager
>    Affects Versions: 2.4.1
>            Reporter: Junping Du
>            Assignee: Junping Du
>
> ShuffleHandler persist job shuffle info into DB schema, which should be 
> versioned with compatible/incompatible changes to support rolling upgrade.



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