[ https://issues.apache.org/jira/browse/YARN-5040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
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 . -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org