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https://issues.apache.org/jira/browse/YARN-5519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15421616#comment-15421616
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Subru Krishnan commented on YARN-5519:
--------------------------------------

[~ellenfkh], I just have one last request :) - can you fix the Javadoc of 
{{AddApplicationHomeSubClusterResponse}} to say:

bq. If a mapping for the application already existed, the {@code SubClusterId} 
in this response will return the existing mapping which might be different from 
that in the {@code AddApplicationHomeSubClusterRequest}.

Also include the same comment in {{FederationApplicationHomeSubClusterStore}}.

> Add SubClusterId in AddApplicationHomeSubClusterResponse for Router Failover
> ----------------------------------------------------------------------------
>
>                 Key: YARN-5519
>                 URL: https://issues.apache.org/jira/browse/YARN-5519
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: nodemanager, resourcemanager
>            Reporter: Giovanni Matteo Fumarola
>            Assignee: Ellen Hui
>         Attachments: YARN-5519-YARN-2915.v1.patch, 
> YARN-5519-YARN-2915.v2.patch, YARN-5519-YARN-2915.v3.patch
>
>
> This JIRA tracks the addition of SubClusterId into 
> AddApplicationHomeSubClusterResponse. 
> in the design of [YARN-3659|https://issues.apache.org/jira/browse/YARN-3659], 
> to handle better fail-over scenario the response needs SubclusterId as field.



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