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https://issues.apache.org/jira/browse/YARN-6511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16041753#comment-16041753
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Botong Huang commented on YARN-6511:
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Great! Thanks [~subru] and [~jianhe] for the review and quick response!
> Federation: transparently spanning application across multiple sub-clusters
> ---------------------------------------------------------------------------
>
> Key: YARN-6511
> URL: https://issues.apache.org/jira/browse/YARN-6511
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Botong Huang
> Assignee: Botong Huang
> Fix For: YARN-2915
>
> Attachments: YARN-6511-YARN-2915.v1.patch,
> YARN-6511-YARN-2915.v2.patch, YARN-6511-YARN-2915.v3.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 two jira, which adds secondary subclusters and do full
> split-merge for requests. Part one is in YARN-3666
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