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https://issues.apache.org/jira/browse/HADOOP-11958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated HADOOP-11958:
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Attachment: HADOOP-11958.001.patch
Patch to log the onTimerEvent exception with a stack backtrace.
> MetricsSystemImpl fails to show backtrace when an error occurs
> --------------------------------------------------------------
>
> Key: HADOOP-11958
> URL: https://issues.apache.org/jira/browse/HADOOP-11958
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: HADOOP-11958.001.patch
>
>
> While investigating YARN-3619 it was frustrating that MetricsSystemImpl was
> logging a ConcurrentModificationException but without any backtrace. Logging
> a backtrace would be very beneficial to tracking down the cause of the
> problem.
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