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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9852) UGI login user keytab and principal should not be static
Date Thu, 08 Aug 2013 16:57:49 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9852?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13733682#comment-13733682
] 

Daryn Sharp commented on HADOOP-9852:
-------------------------------------

Manual testing code added to UGI's main method.
                
> UGI login user keytab and principal should not be static
> --------------------------------------------------------
>
>                 Key: HADOOP-9852
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9852
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: security
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HADOOP-9852.patch
>
>
> The static keytab and principal for the login user is problematic.  The login conf explicitly
references these statics.  As a result, loginUserFromKeytabAndReturnUGI is unnecessarily synch'ed
on the class to swap out the login user's keytab and principal, login, then restore the keytab/principal.
 This method's synch blocks further de-synching of other methods.

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