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Date: Wed, 19 Oct 2011 20:49:11 +0000 (UTC)
From: "Hudson (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (MAPREDUCE-2788) Normalize requests in
 FifoScheduler.allocate to prevent NPEs later
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-2788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13130983#comment-13130983 ] 

Hudson commented on MAPREDUCE-2788:
-----------------------------------

Integrated in Hadoop-Hdfs-trunk-Commit #1190 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Commit/1190/])
    MAPREDUCE-2788. Normalize resource requests in FifoScheduler appropriately. Contributed by Ahmed Radwan.

acmurthy : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1186467
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/SchedulerUtils.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/CapacityScheduler.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/TestSchedulerUtils.java

                
> Normalize requests in FifoScheduler.allocate to prevent NPEs later
> ------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2788
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2788
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>            Reporter: Ahmed Radwan
>            Assignee: Ahmed Radwan
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2788.patch, MAPREDUCE-2788_rev2.patch, MAPREDUCE-2788_rev3.patch, MAPREDUCE-2788_rev4.patch, MAPREDUCE-2788_rev5.patch
>
>
> The assignContainer() method in org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue can cause the scheduler to crash if the ResourseRequest capability memory == 0 (divide by zero).

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