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https://issues.apache.org/jira/browse/YARN-1864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13988458#comment-13988458
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Ashwin Shankar commented on YARN-1864:
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Both test failures are not related to my patch.
> Fair Scheduler Dynamic Hierarchical User Queues
> -----------------------------------------------
>
> Key: YARN-1864
> URL: https://issues.apache.org/jira/browse/YARN-1864
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: scheduler
> Reporter: Ashwin Shankar
> Labels: scheduler
> Attachments: YARN-1864-v1.txt, YARN-1864-v2.txt, YARN-1864-v3.txt,
> YARN-1864-v4.txt, YARN-1864-v5.txt
>
>
> In Fair Scheduler, we want to be able to create user queues under any parent
> queue in the hierarchy. For eg. Say user1 submits a job to a parent queue
> called root.allUserQueues, we want be able to create a new queue called
> root.allUserQueues.user1 and run user1's job in it.Any further jobs submitted
> by this user to root.allUserQueues will be run in this newly created
> root.allUserQueues.user1.
> This is very similar to the 'user-as-default' feature in Fair Scheduler which
> creates user queues under root queue. But we want the ability to create user
> queues under ANY parent queue.
> Why do we want this ?
> 1. Preemption : these dynamically created user queues can preempt each other
> if its fair share is not met. So there is fairness among users.
> User queues can also preempt other non-user leaf queue as well if below fair
> share.
> 2. Allocation to user queues : we want all the user queries(adhoc) to consume
> only a fraction of resources in the shared cluster. By creating this
> feature,we could do that by giving a fair share to the parent user queue
> which is then redistributed to all the dynamically created user queues.
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