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https://issues.apache.org/jira/browse/YARN-5531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16023920#comment-16023920
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Subru Krishnan commented on YARN-5531:
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Thanks [~kasha] for your thoughtful comments. I walked through them in detail
with [~botong] based on v12 patch. I feel he has addressed most of the possible
ones excepts for:
* Add Visibility and Stability annotations for the pool class.
* Have a helper method in {{UnmanagedAMPoolManager}} that doesn't require
the user to provide *uamId*. It'll will implicitly use the attempt id.
* Move super. methods right at the end of serviceStart and serviceStop.
* TODO for making shutdown non-blocking.
* Javadocs to explain why UnmanagedAMIdentifier is public.
* Consider moving rmProxy.finishApplicationMaster to be in a loop.
* Change LOG levels in allocateAsync.
* Nit: I prefer AMRequestHandlerThread.
> 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: Botong Huang
> Attachments: YARN-5531-YARN-2915.v10.patch,
> YARN-5531-YARN-2915.v11.patch, YARN-5531-YARN-2915.v12.patch,
> YARN-5531-YARN-2915.v1.patch, YARN-5531-YARN-2915.v2.patch,
> YARN-5531-YARN-2915.v3.patch, YARN-5531-YARN-2915.v4.patch,
> YARN-5531-YARN-2915.v5.patch, YARN-5531-YARN-2915.v6.patch,
> YARN-5531-YARN-2915.v7.patch, YARN-5531-YARN-2915.v8.patch,
> YARN-5531-YARN-2915.v9.patch
>
>
> 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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