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https://issues.apache.org/jira/browse/HDFS-10872?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-10872 started by Erik Krogen.
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> Add MutableRate metrics for FSNamesystemLock operations
> -------------------------------------------------------
>
> Key: HDFS-10872
> URL: https://issues.apache.org/jira/browse/HDFS-10872
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Erik Krogen
> Assignee: Erik Krogen
>
> Add metrics for FSNamesystemLock operations to see, overall, how long each
> operation is holding the lock for. Use MutableRate metrics for now.
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