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From "Patrick Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2257) Add user to queue mappings to automatically place users' apps into specific queues
Date Tue, 08 Jul 2014 09:15:36 GMT

    [ https://issues.apache.org/jira/browse/YARN-2257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14054683#comment-14054683
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Patrick Liu commented on YARN-2257:
-----------------------------------

Thanks for all of your consideration, cause this is my first report.
 
Agree with both Sandy and Vinod, it is better to add QueuePlacementRule to general framework
rather than specific scheduler.
Besides, I think the user-specific default is a good suggestion. 
Currently, I use an alias like this  "alias hive='hive -hiveconf mapreduce.job.queuename=queue_abc"
to start hive.
With user-specific default queue, this effort can be saved. And it makes configurations more
maintainable.

It's difficult for me to make the patch since I just started reading hadoop code. [~vinodkv]
please do it. Many thanks.

 

> Add user to queue mappings to automatically place users' apps into specific queues
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-2257
>                 URL: https://issues.apache.org/jira/browse/YARN-2257
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>            Reporter: Patrick Liu
>            Assignee: Vinod Kumar Vavilapalli
>              Labels: features
>
> Currently, the fair-scheduler supports two modes, default queue or individual queue for
each user.
> Apparently, the default queue is not a good option, because the resources cannot be managed
for each user or group.
> However, individual queue for each user is not good enough. Especially when connecting
yarn with hive. There will be increasing hive users in a corporate environment. If we create
a queue for a user, the resource management will be hard to maintain.
> I think the problem can be solved like this:
> 1. Define user->queue mapping in Fair-Scheduler.xml. Inside each queue, use aclSubmitApps
to control user's ability.
> 2. Each time a user submit an app to yarn, if the user has mapped to a queue, the app
will be scheduled to that queue; otherwise, the app will be submitted to default queue.
> 3. If the user cannot pass aclSubmitApps limits, the app will not be accepted.



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