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https://issues.apache.org/jira/browse/HDFS-17723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18073691#comment-18073691
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ASF GitHub Bot commented on HDFS-17723:
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Hexiaoqiao commented on PR #8396:
URL: https://github.com/apache/hadoop/pull/8396#issuecomment-4250648160
「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.」
Just wonder what will it happen if remove mount points one by one and cost a
long time. IMO, this will be one low frequency operation, any cases need to
improve the performance? Thanks.
> 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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