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https://issues.apache.org/jira/browse/HDFS-10873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Krogen reassigned HDFS-10873:
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Assignee: (was: Erik Krogen)
> Add histograms for FSNamesystemLock Metrics
> -------------------------------------------
>
> Key: HDFS-10873
> URL: https://issues.apache.org/jira/browse/HDFS-10873
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Erik Krogen
> Priority: Major
>
> It could be useful to have full histograms for how long operations are
> holding the namesystem lock in addition to just rate information. This will,
> however, be a large number of emitted metrics and likely require more
> coordination, so it may be best to have this be separately configurable from
> more simple namesystem lock metrics.
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