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https://issues.apache.org/jira/browse/MAPREDUCE-6084?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junping Du updated MAPREDUCE-6084:
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Attachment: Compatibility of Configuration Across Different MR Versions.pdf
> 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
> Attachments: Compatibility of Configuration Across Different MR
> Versions.pdf
>
>
> 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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