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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6872) Ensure apps could run given NodeLabels are disabled post RM switchover/restart
Date Thu, 27 Jul 2017 09:11:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-6872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102978#comment-16102978
] 

Sunil G commented on YARN-6872:
-------------------------------

Thanks [~rohithsharma]

When new container requests comes, its been validated in ApplicationMasterService#allocate
and InvalidResourceRequestException is thrown back to AM. Hence scheduler will not have problem.
At most what could happen is, AM container may never get scheduled and it may remain in scheduler
queue until admin corrects the pblm with labels. (enabled/disable)

> Ensure apps could run given NodeLabels are disabled post RM switchover/restart
> ------------------------------------------------------------------------------
>
>                 Key: YARN-6872
>                 URL: https://issues.apache.org/jira/browse/YARN-6872
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: YARN-6872.001.patch
>
>
> Post YARN-6031, few apps could be failed during recovery provided they had some label
requirements for AM and labels were disable post RM restart/switchover. As discussed in YARN-6031,
its better to run such apps as it may be long running apps as well.



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