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https://issues.apache.org/jira/browse/HDFS-9229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971693#comment-14971693
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Jing Zhao commented on HDFS-9229:
---------------------------------
How about updating the number only when a checkpoint is done or edits are
rolled?
> Expose size of NameNode directory as a metric
> ---------------------------------------------
>
> Key: HDFS-9229
> URL: https://issues.apache.org/jira/browse/HDFS-9229
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.7.1
> Reporter: Zhe Zhang
> Assignee: Surendra Singh Lilhore
> Priority: Minor
> Attachments: HDFS-9229.001.patch, HDFS-9229.002.patch,
> HDFS-9229.003.patch
>
>
> Useful for admins in reserving / managing NN local file system space. Also
> useful when transferring NN backups.
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