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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-336) Fair scheduler FIFO scheduling within a queue only allows 1 app at a time
Date Wed, 16 Jan 2013 14:06:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13555047#comment-13555047
] 

Hudson commented on YARN-336:
-----------------------------

Integrated in Hadoop-Mapreduce-trunk #1315 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1315/])
    YARN-336. Fair scheduler FIFO scheduling within a queue only allows 1 app at a time. Contributed
by Sandy Ryza. (Revision 1433526)

     Result = FAILURE
tomwhite : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1433526
Files : 
* /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/AppSchedulable.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FSLeafQueue.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java

                
> Fair scheduler FIFO scheduling within a queue only allows 1 app at a time 
> --------------------------------------------------------------------------
>
>                 Key: YARN-336
>                 URL: https://issues.apache.org/jira/browse/YARN-336
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scheduler
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>             Fix For: 2.0.3-alpha
>
>         Attachments: YARN-336.patch
>
>
> The fair scheduler allows apps to be scheduled in FIFO fashion within a queue.  Currently,
when this setting is turned on, the scheduler only allows one app to run at a time.  While
apps submitted earlier should get first priority for allocations, when there is space remaining,
other apps should have a change to get at them.

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