[
https://issues.apache.org/jira/browse/YARN-1864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13948500#comment-13948500
]
Ashwin Shankar commented on YARN-1864:
--------------------------------------
[~sandyr] ,adding to the proposals - the following would work with queue
placement policy and user need not specify parent queue :
We could take a default parentUserQueue as argument in the queue placement
policy and if the user doesn't specify a parent ,we create
user queues under that default parentUserQueue for eg :
<queuePlacementPolicy>
<rule name="specified" />
*<rule name ="hierarchicalUserQueue" defaultQueueName="parentUserQueue" />*
</queuePlacementPolicy>
If no defaultQueueName is provided, we could return the first parent user queue
in our Set<ParentUserQueues> and create a user queue under it.
However,if the user explicitly provides parent user queue,then we follow logic
mentioned in YARN-1864-v1 patch.
Thoughts ?
> 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
>
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
