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https://issues.apache.org/jira/browse/HDFS-9952?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HDFS-9952:
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Attachment: HDFS-9952-05.patch
Rebased the patch and added assertions for the added metrics.
> Expose FSNamesystem lock wait time as metrics
> ---------------------------------------------
>
> Key: HDFS-9952
> URL: https://issues.apache.org/jira/browse/HDFS-9952
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Attachments: HDFS-9952-01.patch, HDFS-9952-02.patch,
> HDFS-9952-03.patch, HDFS-9952-04.patch, HDFS-9952-05.patch
>
>
> Expose FSNameSystem's readlock() and writeLock() wait time as metrics.
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