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https://issues.apache.org/jira/browse/YARN-2877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14221309#comment-14221309
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Sujeet Varakhedi commented on YARN-2877:
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+ 1 for distributed scheduling and SQL engines for Hadoop can greatly benefit 
from it. We also need to look at a design we can give AMs more control over 
scheduling policies where RM just acts a source of overall cluster state, NM's 
have local queues and then based on NM queue wait times AM's can decide where 
to requests tasks. Similar to how Sparrow works. This kind of scheduling 
becomes important for services that need dedicated non-shared clusters like 
HBASE and HAWQ.

> 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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