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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-177) CapacityScheduler - adding a queue while the RM is running has wacky results
Date Tue, 23 Oct 2012 14:23:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13482353#comment-13482353

Hadoop QA commented on YARN-177:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

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

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 1 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/117//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-YARN-Build/117//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/117//console

This message is automatically generated.
> CapacityScheduler - adding a queue while the RM is running has wacky results
> ----------------------------------------------------------------------------
>                 Key: YARN-177
>                 URL: https://issues.apache.org/jira/browse/YARN-177
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 0.23.3
>            Reporter: Thomas Graves
>            Assignee: Arun C Murthy
>            Priority: Critical
>             Fix For: 2.0.3-alpha, 0.23.5
>         Attachments: YARN-177.patch, YARN-177.patch
> Adding a queue to the capacity scheduler while the RM is running and then running a job
in the queue added results in very strange behavior.  The cluster Total Memory can either
decrease or increase.  We had a cluster where total memory decreased to almost 1/6th the capacity.
Running on a small test cluster resulted in the capacity going up by simply adding a queue
and running wordcount.  
> Looking at the RM logs, used memory can go negative but other logs show the number positive:
> 2012-10-21 22:56:44,796 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue:
assignedContainer queue=root usedCapacity=0.0375 absoluteUsedCapacity=0.0375 used=memory:
7680 cluster=memory: 204800
> 2012-10-21 22:56:45,831 [ResourceManager Event Processor] INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue:
completedContainer queue=root usedCapacity=-0.0225 absoluteUsedCapacity=-0.0225 used=memory:
-4608 cluster=memory: 204800

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