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https://issues.apache.org/jira/browse/YARN-7010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135893#comment-16135893
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Carlo Curino commented on YARN-7010:
------------------------------------

Thanks [~giovanni.fumarola] for the patch. Few concerns below.
# the behavior on missing sub-clusters is not very clear. For once I don't 
think we can use the UAM size 1 as a discriminator for Fedeation/not UAM, more 
critically we should define more precisely what to do in case of a missing 
sub-cluster (both if it is the Home RM of an App or if it isn't)
# {{AppsInfo.addAll(AppsInfo)}} maybe best {{AppsInfo.addAll(List<AppInfo>)}}
# size of the threadpool?
# The  {{O(n)}} notation is nice, but specify what is n or it is not very 
useful.


> Federation: routing REST invocations transparently to multiple RMs (part 2 - 
> getApps)
> -------------------------------------------------------------------------------------
>
>                 Key: YARN-7010
>                 URL: https://issues.apache.org/jira/browse/YARN-7010
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Giovanni Matteo Fumarola
>            Assignee: Giovanni Matteo Fumarola
>         Attachments: YARN-7010.v0.patch
>
>




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