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https://issues.apache.org/jira/browse/HDFS-8983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15485300#comment-15485300
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Zhe Zhang commented on HDFS-8983:
---------------------------------
Quick note that I'm working on backporting HDFS-10744 to branch-2.7; since this
change is not in branch-2.7, the overlapping part won't be backported.
If someone plans to backport this to branch-2.7, please remember to add the
optimization from HDFS-10744.
> NameNode support for protected directories
> ------------------------------------------
>
> Key: HDFS-8983
> URL: https://issues.apache.org/jira/browse/HDFS-8983
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.7.1
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Fix For: 2.8.0, 3.0.0-alpha1
>
> Attachments: HDFS-8393.01.patch, HDFS-8393.02.patch,
> HDFS-8983.03.patch, HDFS-8983.04.patch
>
>
> To protect important system directories from inadvertent deletion (e.g.
> /Users) the NameNode can allow marking directories as _protected_. Such
> directories cannot be deleted unless they are empty.
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