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https://issues.apache.org/jira/browse/YARN-3666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031825#comment-16031825
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Botong Huang commented on YARN-3666:
------------------------------------

Unit test {{TestDelegationTokenRenewer.testCancelWithMultipleAppSubmissions}} 
is not related to my patch as well, and it is passing locally. 

> Federation Intercepting and propagating AM-RM communications (part one: home 
> RM only)
> -------------------------------------------------------------------------------------
>
>                 Key: YARN-3666
>                 URL: https://issues.apache.org/jira/browse/YARN-3666
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Kishore Chaliparambil
>            Assignee: Botong Huang
>         Attachments: YARN-3666-YARN-2915.v1.patch, 
> YARN-3666-YARN-2915.v2.patch, YARN-3666-YARN-2915.v3.patch, 
> YARN-3666-YARN-2915.v4.patch, YARN-3666-YARN-2915.v5.patch, 
> YARN-3666-YARN-2915.v6.patch, YARN-3666-YARN-2915.v7.patch, 
> YARN-3666-YARN-2915.v8.patch, YARN-3666-YARN-2915.v9.patch
>
>
> In order, to support transparent "spanning" of jobs across sub-clusters, all 
> AM-RM communications are proxied (via YARN-2884).
> This JIRA tracks federation-specific mechanisms that decide how to 
> "split/broadcast" requests to the RMs and "merge" answers to 
> the AM.
> This the part one jira, which sets up the basic structure, without secondary 
> subclusters. All requests are forwarded to home subcluster. Part two is in 
> YARN-6511



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