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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8983) NameNode support for protected directories
Date Wed, 27 Jul 2016 12:21:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15395557#comment-15395557
] 

Steve Loughran commented on HDFS-8983:
--------------------------------------

...just came across this.

Currently we say in filesystem.md that HDFS is a special case, in which {{delete("/",true)}}
always fails. Does this patch change the root directory behaviour? that is, {{ {{delete("/",true)
 -. AccessControlException}} ? 

> 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
>
>         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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