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https://issues.apache.org/jira/browse/YARN-666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13686102#comment-13686102
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Siddharth Seth commented on YARN-666:
-------------------------------------
TBD - handling of Enum fields like AMCommand, NodeAction. This may be possible
by forcing defaults if a new value needs to be added, alternately define a new
Enum which is used by newer clients.
> [Umbrella] Support rolling upgrades in YARN
> -------------------------------------------
>
> Key: YARN-666
> URL: https://issues.apache.org/jira/browse/YARN-666
> Project: Hadoop YARN
> Issue Type: Improvement
> Affects Versions: 2.0.4-alpha
> Reporter: Siddharth Seth
> Attachments: YARN_Rolling_Upgrades.pdf, YARN_Rolling_Upgrades_v2.pdf
>
>
> Jira to track changes required in YARN to allow rolling upgrades, including
> documentation and possible upgrade routes.
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