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https://issues.apache.org/jira/browse/HADOOP-9852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HADOOP-9852:
-------------------------------------
    Labels: BB2015-05-TBR  (was: )

> 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
>              Labels: BB2015-05-TBR
>         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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