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Posted to yarn-issues@hadoop.apache.org by "zhihai xu (JIRA)" <ji...@apache.org> on 2015/05/13 06:53:00 UTC
[jira] [Updated] (YARN-3619) ContainerMetrics unregisters during
getMetrics and leads to ConcurrentModificationException
[ https://issues.apache.org/jira/browse/YARN-3619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhihai xu updated YARN-3619:
----------------------------
Attachment: test.patch
> 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
> Assignee: zhihai xu
> Attachments: test.patch
>
>
> 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}
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