Jason Lowe created YARN-3619: -------------------------------- Summary: ContainerMetrics unregisters during getMetrics and leads to ConcurrentModificationException Key: YARN-3619 URL: https://issues.apache.org/jira/browse/YARN-3619 Project: Hadoop YARN Issue Type: Bug Components: nodemanager Affects Versions: 2.7.0 Reporter: Jason Lowe
ContainerMetrics is able to unregister itself during the getMetrics method, but that method can be called by MetricsSystemImpl.sampleMetrics which is trying to iterate the sources. This leads to a ConcurrentModificationException log like this: {noformat} 2015-05-11 14:00:20,360 [Timer for 'NodeManager' metrics system] WARN impl.MetricsSystemImpl: java.util.ConcurrentModificationException {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)