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https://issues.apache.org/jira/browse/HDFS-14802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16920559#comment-16920559
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Fei Hui commented on HDFS-14802:
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[~hexiaoqiao]Thanks for your comments, good suggestions!
Regex match is one way, separated configurable file for protect directories is
another. We choose the latter in our scenario. Plan to file a new issue and
discuss the improvement for protect directories configurations
> 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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