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https://issues.apache.org/jira/browse/YARN-5531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15433274#comment-15433274
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Karthik Kambatla commented on YARN-5531:
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I had filed YARN-2963 at some point to expose an Unmanaged AM pool. Any chance 
we could expose this construct outside of federation? I am not sure how much of 
my code on YARN-2963 is useful anymore, but feel free to use it as necessary. 
Happy to review this. 

> UnmanagedAM pool manager for federating application across clusters
> -------------------------------------------------------------------
>
>                 Key: YARN-5531
>                 URL: https://issues.apache.org/jira/browse/YARN-5531
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Subru Krishnan
>            Assignee: Sarvesh Sakalanaga
>
> One of the main tenets the YARN Federation is to *transparently* scale 
> applications across multiple clusters. This is achieved by running UAMs on 
> behalf of the application on other clusters. This JIRA tracks the addition of 
> a UnmanagedAM pool manager for federating application across clusters which 
> will be used the FederationInterceptor (YARN-3666) which is part of the 
> AMRMProxy pipeline introduced in YARN-2884.



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