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https://issues.apache.org/jira/browse/HDFS-14802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16920394#comment-16920394
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He Xiaoqiao commented on HDFS-14802:
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Thanks [~ferhui] for your contribution, I think maybe we need regex to match
the `protect directories`. such as protect db directories to delete in
warehouse, and I have to config many many paths based on my own practice. if we
support regex match, it should be simpler. FYI.
> The feature of protect directories should be used in RenameOp
> -------------------------------------------------------------
>
> Key: HDFS-14802
> URL: https://issues.apache.org/jira/browse/HDFS-14802
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 3.0.4, 3.3.0, 3.2.1, 3.1.3
> Reporter: Fei Hui
> Assignee: Fei Hui
> Priority: Major
> Attachments: HDFS-14802.001.patch, HDFS-14802.002.patch
>
>
> Now we could set fs.protected.directories to prevent users from deleting
> important directories. But users can delete directories around the limitation.
> 1. Rename the directories and delete them.
> 2. move the directories to trash and namenode will delete them.
> So I think we should use the feature of protected directories in RenameOp
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