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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1864) Fair Scheduler Dynamic Hierarchical User Queues
Date Thu, 24 Apr 2014 07:41:19 GMT

    [ https://issues.apache.org/jira/browse/YARN-1864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13979399#comment-13979399
] 

Hadoop QA commented on YARN-1864:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12641653/YARN-1864-v3.txt
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
1.3.9) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/3620//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/3620//console

This message is automatically generated.

> 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
>
>
> 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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