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https://issues.apache.org/jira/browse/HDFS-17723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17923217#comment-17923217
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ASF GitHub Bot commented on HDFS-17723:
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kokon191 opened a new pull request, #7346:
URL: https://github.com/apache/hadoop/pull/7346
### Description of PR
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.
### How was this patch tested?
UTs + have been in use in production environment for a while.
> 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
>
> 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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