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Posted to common-issues@hadoop.apache.org by "Marc Villacorta (JIRA)" <ji...@apache.org> on 2013/08/08 16:15:48 UTC

[jira] [Commented] (HADOOP-3098) dfs -chown does not like "_" underscore in user name

    [ https://issues.apache.org/jira/browse/HADOOP-3098?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13733531#comment-13733531 ] 

Marc Villacorta commented on HADOOP-3098:
-----------------------------------------

In my company we use _'COMPANYNAME+name.surname'_ as usernames.
The _'+'_ character is the winbind separator.
I am able to create files in HDFS but I cannot chown as _'+'_ is not in _[-_.@/a-zA-Z0-9]_.
We are also planning to enable kerberos in our Hadoop cluster.

Why _'+'_ is not allowed?
Thank you.
                
> dfs -chown does not like "_" underscore in user name
> ----------------------------------------------------
>
>                 Key: HADOOP-3098
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3098
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.16.0, 0.16.1
>            Reporter: Koji Noguchi
>            Assignee: Raghu Angadi
>            Priority: Blocker
>             Fix For: 0.16.2
>
>         Attachments: HADOOP-3098.patch, HADOOP-3098.patch
>
>
> :~$ hadoop dfs -chown aaa_bbb  /user/knoguchi/test.txt
> chown: 'aaa_bbb' does not match expected pattern for [owner][:group].
> in 0.16.1, only alphabets and numbers are allowed.  Shouldn't '_' be allowed?
> I couldn't find any standard, but in Solaris10, it's defined as 
> http://docs.sun.com/app/docs/doc/816-5174/6mbb98uhg?a=view
> bq. The login (login) and role (role) fields accept a string of no more than eight bytes consisting of characters from the set of alphabetic characters, numeric characters, period (.), underscore (_), and hyphen (-). The first character should be alphabetic and the field should contain at least one lower case alphabetic character. A warning message is displayed if these restrictions are not met.

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