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https://issues.apache.org/jira/browse/HADOOP-6731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12862043#action_12862043
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Jakob Homan commented on HADOOP-6731:
-------------------------------------

If this change goes through, we should update the documentation in FsShell.java 
(in common):
{noformat}      "\tMODE\tMode is same as mode used for chmod shell command.\n" +
      "\t\tOnly letters recognized are 'rwxXt'. E.g. +t,a+r,g-w,+rwx,o=r\n\n" +
      "\tOCTALMODE Mode specifed in 3 or 4 digits. If 4 digits, the first 
may\n" +
      "\tbe 1 or 0 to turn the sticky bit on or off, respectively.  Unlike " +
      "\tshell command, it is not possible to specify only part of the mode\n" 
+{noformat}
Eli - it's always good to consider the other components as well!

> Octal umask with less than 3 digits is not handled
> --------------------------------------------------
>
>                 Key: HADOOP-6731
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6731
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.21.0, 0.22.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.22.0
>
>         Attachments: HADOOP-6731.patch
>
>
> Umasks with less than three digits should be accepted as valid umask. Umask 
> with single digit, say 7, should be handled as 007. Similarly umask with two 
> digits, say 77, should be handled as 077.

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