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https://issues.apache.org/jira/browse/YARN-5823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15651784#comment-15651784
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Konstantinos Karanasos commented on YARN-5823:
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Thanks for the review and the commit, [~asuresh]!

> Update NMTokens in case of requests with only opportunistic containers
> ----------------------------------------------------------------------
>
>                 Key: YARN-5823
>                 URL: https://issues.apache.org/jira/browse/YARN-5823
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Konstantinos Karanasos
>            Assignee: Konstantinos Karanasos
>            Priority: Blocker
>             Fix For: 3.0.0-alpha2
>
>         Attachments: YARN-5823.001.patch, YARN-5823.002.patch, 
> YARN-5823.003.patch, YARN-5823.004.patch
>
>
> At the moment, when an {{AllocateRequest}} contains only opportunistic 
> {{ResourceRequests}}, the updated NMTokens are not properly added to the 
> {{AllocateResponse}}.
> In such a case the AM does not get back the needed NMTokens that are required 
> to start the opportunistic containers at the respective nodes.



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