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https://issues.apache.org/jira/browse/YARN-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14316360#comment-14316360
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Hudson commented on YARN-2809:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #2052 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2052/])
YARN-2809. Implement workaround for linux kernel panic when removing cgroup.
Contributed by Nathan Roberts (jlowe: rev
3f5431a22fcef7e3eb9aceeefe324e5b7ac84049)
*
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
*
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/util/CgroupsLCEResourcesHandler.java
*
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/util/TestCgroupsLCEResourcesHandler.java
* hadoop-yarn-project/CHANGES.txt
> Implement workaround for linux kernel panic when removing cgroup
> ----------------------------------------------------------------
>
> Key: YARN-2809
> URL: https://issues.apache.org/jira/browse/YARN-2809
> Project: Hadoop YARN
> Issue Type: Bug
> Components: nodemanager
> Affects Versions: 2.6.0
> Environment: RHEL 6.4
> Reporter: Nathan Roberts
> Assignee: Nathan Roberts
> Fix For: 2.7.0
>
> Attachments: YARN-2809-v2.patch, YARN-2809-v3.patch, YARN-2809.patch
>
>
> Some older versions of linux have a bug that can cause a kernel panic when
> the LCE attempts to remove a cgroup. It is a race condition so it's a bit
> rare but on a few thousand node cluster it can result in a couple of panics
> per day.
> This is the commit that likely (haven't verified) fixes the problem in linux:
> https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-2.6.39.y&id=068c5cc5ac7414a8e9eb7856b4bf3cc4d4744267
> Details will be added in comments.
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