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https://issues.apache.org/jira/browse/YARN-7402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433404#comment-16433404
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Wangda Tan commented on YARN-7402:
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[~curino] / [~subru], thanks for working on this improvement, is there any
design/explanation doc so we can understand the overall idea and scope?
> Federation V2: Global Optimizations
> -----------------------------------
>
> Key: YARN-7402
> URL: https://issues.apache.org/jira/browse/YARN-7402
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: federation
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Priority: Major
>
> YARN Federation today requires manual configuration of queues within each
> sub-cluster, and each RM operates "in isolation". This has few issues:
> # Preemption is computed locally (and might far exceed the global need)
> # Jobs within a queue are forced to consume their resources "evenly" based on
> queue mapping
> This umbrella JIRA tracks a new feature that leverages the
> FederationStateStore as a synchronization mechanism among RMs, and allows for
> allocation and preemption decisions to be based on a (close to up-to-date)
> global view of the cluster allocation and demand. The JIRA also tracks
> algorithms to automatically generate policies for Router and AMRMProxy to
> shape the traffic to each sub-cluster, and general "maintenance" of the
> FederationStateStore.
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