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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9778) Support configurable user name and group name validation patterns in chown and chgrp shell commands.
Date Fri, 26 Jul 2013 18:31:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13721039#comment-13721039
] 

Daryn Sharp commented on HADOOP-9778:
-------------------------------------

If we are *nix shell expanding usernames, that definitely needs to be fixed.  I personally
agree with the original premise of let the OS decide but I suppose you could make the pattern
".*" if that's what you want.
                
> Support configurable user name and group name validation patterns in chown and chgrp
shell commands.
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-9778
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9778
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 3.0.0, 2.3.0
>            Reporter: Chris Nauroth
>            Priority: Minor
>
> The chown and chgrp shell commands enforce a valid set of characters for user names and
group names.  The validation rules for user names and group names vary across different OSes,
so this is a portability problem and a maintenance burden.  It requires us to change the code
every time we discover a difference in the rules.  I propose that we remove this validation
logic and instead pass through input user names and group names to the OS.  We can handle
error reporting by catching errors returned from the OS.

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