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https://issues.apache.org/jira/browse/HADOOP-15067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Misha Dmitriev updated HADOOP-15067:
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Status: Patch Available (was: In Progress)
> GC time percentage reported in JvmMetrics should be a gauge, not counter
> ------------------------------------------------------------------------
>
> Key: HADOOP-15067
> URL: https://issues.apache.org/jira/browse/HADOOP-15067
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Misha Dmitriev
> Assignee: Misha Dmitriev
> Attachments: HADOOP-15067.01.patch
>
>
> A new GcTimeMonitor class has been recently added, and the corresponding
> metrics added in JvmMetrics.java, line 190:
> {code}
> if (gcTimeMonitor != null) {
> rb.addCounter(GcTimePercentage,
> gcTimeMonitor.getLatestGcData().getGcTimePercentage());
> }
> {code}
> Since GC time percentage can go up and down, a gauge rather than counter
> should be used to report it. That is, {{addCounter}} should be replaced with
> {{addGauge}} above.
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