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https://issues.apache.org/jira/browse/YARN-2877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14221203#comment-14221203
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Sriram Rao commented on YARN-2877:
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[~airbots] The number of AM's running on any machine is
configurable/small---on the order of a few tens, and so the overhead on LocalRM
should be negligible.
> Extend YARN to support distributed scheduling
> ---------------------------------------------
>
> Key: YARN-2877
> URL: https://issues.apache.org/jira/browse/YARN-2877
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager, resourcemanager
> Reporter: Sriram Rao
>
> This is an umbrella JIRA that proposes to extend YARN to support distributed
> scheduling. Briefly, some of the motivations for distributed scheduling are
> the following:
> 1. Improve cluster utilization by opportunistically executing tasks otherwise
> idle resources on individual machines.
> 2. Reduce allocation latency. Tasks where the scheduling time dominates
> (i.e., task execution time is much less compared to the time required for
> obtaining a container from the RM).
>
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