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From "Bharat Viswanadham (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14843) FsPermission symbolic parsing failed to detect invalid argument
Date Thu, 07 Sep 2017 17:18:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157264#comment-16157264
] 

Bharat Viswanadham commented on HADOOP-14843:
---------------------------------------------

[~jlowe] 
I have thought +r, +rwx are also not valid inputs and provided the patch to raise exception
for those inputs also. And as valueOf(String) method is already there for unix representation
for considering these. 
Thanks for clarification.
I think then existing behavior is fine.


> FsPermission symbolic parsing failed to detect invalid argument
> ---------------------------------------------------------------
>
>                 Key: HADOOP-14843
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14843
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 2.7.4, 2.8.1
>            Reporter: Jason Lowe
>            Assignee: Bharat Viswanadham
>         Attachments: HADOOP-14843.patch
>
>
> A user misunderstood the syntax format for the FsPermission symbolic constructor and
passed the argument "-rwr" instead of "u=rw,g=r".  In 2.7 and earlier this was silently misinterpreted
as mode 0777 and in 2.8 it oddly became mode 0000.  In either case FsPermission should have
flagged "-rwr" as an invalid argument rather than silently misinterpreting it.



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