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https://issues.apache.org/jira/browse/HDFS-11100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15707690#comment-15707690
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John Zhuge commented on HDFS-11100:
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[~yzhangal] Thanks for the great review! Item 4 may be hard implement from my
quick check of the code.
> Recursively deleting file protected by sticky bit should fail
> -------------------------------------------------------------
>
> Key: HDFS-11100
> URL: https://issues.apache.org/jira/browse/HDFS-11100
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.6.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Critical
> Labels: permissions
> Attachments: HDFS-11100.001.patch, HDFS-11100.002.patch,
> HDFS-11100.002.patch, hdfs_cmds
>
>
> Recursively deleting a directory that contains files or directories protected
> by sticky bit should fail but it doesn't in HDFS. In the case below,
> {{/tmp/test/sticky_dir/f2}} is protected by sticky bit, thus recursive
> deleting {{/tmp/test/sticky_dir}} should fail.
> {noformat}
> + hdfs dfs -ls -R /tmp/test
> drwxrwxrwt - jzhuge supergroup 0 2016-11-03 18:08
> /tmp/test/sticky_dir
> -rwxrwxrwx 1 jzhuge supergroup 0 2016-11-03 18:08
> /tmp/test/sticky_dir/f2
> + sudo -u hadoop hdfs dfs -rm -skipTrash /tmp/test/sticky_dir/f2
> rm: Permission denied by sticky bit: user=hadoop,
> path="/tmp/test/sticky_dir/f2":jzhuge:supergroup:-rwxrwxrwx,
> parent="/tmp/test/sticky_dir":jzhuge:supergroup:drwxrwxrwt
> + sudo -u hadoop hdfs dfs -rm -r -skipTrash /tmp/test/sticky_dir
> Deleted /tmp/test/sticky_dir
> {noformat}
> Centos 6.4 behavior:
> {noformat}
> $ ls -lR /tmp/test
> /tmp/test:
> total 4
> drwxrwxrwt 2 systest systest 4096 Nov 3 18:36 sbit
> /tmp/test/sbit:
> total 0
> -rw-rw-rw- 1 systest systest 0 Nov 2 13:45 f2
> $ sudo -u mapred rm -fr /tmp/test/sbit
> rm: cannot remove `/tmp/test/sbit/f2': Operation not permitted
> $ chmod -t /tmp/test/sbit
> $ sudo -u mapred rm -fr /tmp/test/sbit
> {noformat}
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