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Date: Sun, 18 Nov 2012 04:56:12 +0000 (UTC)
From: "Alejandro Abdelnur (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <610041934.128599.1353214572153.JavaMail.jiratomcat@arcas>
Subject: [jira] [Commented] (HDFS-4171) WebHDFS and HttpFs should accept
 only valid Unix user names
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    [ https://issues.apache.org/jira/browse/HDFS-4171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499604#comment-13499604 ] 

Alejandro Abdelnur commented on HDFS-4171:
------------------------------------------

committed to trunk. leaving JIRA open until it gets committed to branch-2 (currently it is not compiling).
                
> WebHDFS and HttpFs should accept only valid Unix user names
> -----------------------------------------------------------
>
>                 Key: HDFS-4171
>                 URL: https://issues.apache.org/jira/browse/HDFS-4171
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.2-alpha
>            Reporter: Harsh J
>            Assignee: Alejandro Abdelnur
>             Fix For: 2.0.3-alpha
>
>         Attachments: HDFS-4171.patch, HDFS-4171.patch, HDFS-4171.patch, HDFS-4171.patch
>
>
> HttpFs tries to use UserProfile.USER_PATTERN to match all usernames before a doAs impersonation function. This regex is too strict for most usernames, as it disallows any special character at all. We should relax it more or ditch needing to match things there.
> WebHDFS currently has no such limitations.

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