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https://issues.apache.org/jira/browse/HDFS-17723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18069770#comment-18069770
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ASF GitHub Bot commented on HDFS-17723:
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kokonguyen191 opened a new pull request, #8396:
URL: https://github.com/apache/hadoop/pull/8396
### Description of PR
https://issues.apache.org/jira/browse/HDFS-17723
Since each remove operation forces an update on all routers, removing a lot
of mount points in one go when there are a decent number of routers can take a
long time. It's better to just remove all of them in a batch and force update
only once. Useful for nuking old unused mount points.
Reopened to add some small fixes and since it was bot closed
### How was this patch tested?
UTs + have been in use in production environment for over a year
> RBF: Optimize multiple mount point removal
> ------------------------------------------
>
> Key: HDFS-17723
> URL: https://issues.apache.org/jira/browse/HDFS-17723
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Felix N
> Assignee: Felix N
> Priority: Minor
> Labels: pull-request-available
>
> Since each remove operation forces an update on all routers, removing a lot
> of mount points in one go when there are a decent number of routers can take
> a long time. It's better to just remove all of them in a batch and force
> update only once. Useful for nuking old unused mount points.
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