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Hudson commented on YARN-2809: ------------------------------ FAILURE: Integrated in Hadoop-trunk-Commit #7063 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/7063/]) 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-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/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)