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https://issues.apache.org/jira/browse/HDFS-15703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242738#comment-17242738
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Jim Brennan commented on HDFS-15703:
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Thanks for putting this up [~ahussein]! We have been running with this in
production for a few years now. Code and test look good to me.
+1
> Don't generate edits for set operations that are no-op
> ------------------------------------------------------
>
> Key: HDFS-15703
> URL: https://issues.apache.org/jira/browse/HDFS-15703
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> [~daryn] reported that setting the owner, group, or permissions to what it
> already is will generate an unnecessary edit. It should not do this to avoid
> performance issues when users unnecessarily run routine jobs to change the
> group and permissions of a project tree.
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