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https://issues.apache.org/jira/browse/HDFS-6761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14076155#comment-14076155
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Akira AJISAKA commented on HDFS-6761:
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Oh, I misunderstood the description.
A user in supergroup is a super-user, so permission checks never fail.
See
http://hadoop.apache.org/docs/r2.4.1/hadoop-project-dist/hadoop-hdfs/HdfsPermissionsGuide.html#The_Super-User
for the detail.
> supergroup permission
> ----------------------
>
> Key: HDFS-6761
> URL: https://issues.apache.org/jira/browse/HDFS-6761
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: newskyblue
> Priority: Minor
>
> <hdfs default directory information>
> Permission Owner Group Size Name
> drwxr-wr-x hdfs supergroup 0 /user
> I created 'testuser' account and added 'testuser' to the supergroup.
> When i use 'testuser' account, I try to 'hadoop fs mkdir /user/data' command.
> I thought when i run 'hadoop fs mkdir /user/data' command, this result would
> be shown 'permission denied'
> but I can make 'data' directory.
> Is this correct?
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