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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3713) Incorrect headroom reported to jobs
Date Thu, 26 Jan 2012 00:04:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3713?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13193452#comment-13193452
] 

Hudson commented on MAPREDUCE-3713:
-----------------------------------

Integrated in Hadoop-Common-trunk-Commit #1586 (See [https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1586/])
    MAPREDUCE-3713. Fixed the way head-room is allocated to applications by CapacityScheduler
so that it deducts current-usage per user and not per-application. Contributed by Arun C Murthy.

vinodkv : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1235989
Files : 
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/SchedulerApp.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fifo/FifoScheduler.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java

                
> Incorrect headroom reported to jobs
> -----------------------------------
>
>                 Key: MAPREDUCE-3713
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3713
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, resourcemanager
>    Affects Versions: 0.23.0
>            Reporter: Siddharth Seth
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.23.1
>
>         Attachments: MAPREDUCE-3713.patch, MAPREDUCE-3713.patch, MAPREDUCE-3713.patch
>
>
> With multiple jobs submitted per user, and multiple users submitting jobs - the headroom
reported to the AppMasters is incorrect (very high).
> Leads to a deadlock - reduces started, map tasks not complete... and reduces are not
preempted by the AM due to the incorrect headroom.

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