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https://issues.apache.org/jira/browse/YARN-335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13554917#comment-13554917
]
Hudson commented on YARN-335:
-----------------------------
Integrated in Hadoop-Yarn-trunk #98 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/98/])
YARN-335. Fair scheduler doesn't check whether rack needs containers before
assigning to node. Contributed by Sandy Ryza. (Revision 1433484)
Result = SUCCESS
tomwhite :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1433484
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/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
> Fair scheduler doesn't check whether rack needs containers before assigning
> to node
> -----------------------------------------------------------------------------------
>
> Key: YARN-335
> URL: https://issues.apache.org/jira/browse/YARN-335
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 2.0.2-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: YARN-335.patch
>
>
> If an application has an outstanding request on a node, the fair scheduler
> may try to place a container on that node without checking whether that
> node's rack needs any containers. If the rack doesn't need any containers,
> none should be scheduled on the node.
> This can cause an NPE in the fair scheduler.
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