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https://issues.apache.org/jira/browse/HDFS-15619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17264082#comment-17264082
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Shashikant Banerjee commented on HDFS-15619:
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We can should also add metrics related to quota usage of deleted snapshots both
in terms of namespace as well as disk space.
> Metric for ordered snapshot deletion GC thread
> ----------------------------------------------
>
> Key: HDFS-15619
> URL: https://issues.apache.org/jira/browse/HDFS-15619
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs
> Reporter: Nilotpal Nandi
> Assignee: Nilotpal Nandi
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Following info should be captured and shown in JMX for garbage collection
> thread of ordered snapshot deletion
> * metric for all pending snapshots to be GCed
> * Number of times GC thread ran
> * Number of Snapshots already GCed
> * Average time taken by each GC run
> * Thread running Status
> * metric for failed deletion of GC thread
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