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https://issues.apache.org/jira/browse/YARN-666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659709#comment-13659709
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Vinod Kumar Vavilapalli commented on YARN-666:
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[~curino], thanks for the update, interesting stuff. I think we should pursue
this route and do some experiments. Much much easier to do these experiments in
2.x given the YARN and MR separation. May be there's already a ticket for this.
Will it be possible to put up your changes however 'hacky' they might be?
[~lohit], we have per node health check monitoring which blocks bad nodes.
There isn't any other concept of blacklisting NMs today, that is the reason for
the proposal to add a decommission.
> [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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