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https://issues.apache.org/jira/browse/YARN-5040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Varun Vasudev reassigned YARN-5040:
-----------------------------------
Assignee: Varun Vasudev
> CPU Isolation with CGroups triggers kernel panics on Centos 7.1/7.2 when
> yarn.nodemanager.resource.percentage-physical-cpu-limit < 100
> --------------------------------------------------------------------------------------------------------------------------------------
>
> Key: YARN-5040
> URL: https://issues.apache.org/jira/browse/YARN-5040
> Project: Hadoop YARN
> Issue Type: Bug
> Affects Versions: 2.9.0
> Reporter: Sidharta Seethana
> Assignee: Varun Vasudev
>
> /cc [~vvasudev]
> We have been running some benchmarks internally with resource isolation
> enabled. We have consistently run into kernel panics when running a large job
> ( a large pi job, terasort ). These kernel panics wen't away when we set
> yarn.nodemanager.resource.percentage-physical-cpu-limit=100 . Anything less
> than 100 triggers different behavior in YARN's CPU resource handler which
> seems to cause these issues. Looking at the kernel crash dumps, the
> backtraces were different - sometimes pointing to java processes, sometimes
> not.
> Kernel versions used : 3.10.0-229.14.1.el7.x86_64 and
> 3.10.0-327.13.1.el7.x86_64 .
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