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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7982) UserGroupInformation fails to login if thread's context classloader can't load HadoopLoginModule
Date Tue, 10 Mar 2015 02:22:39 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7982?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated HADOOP-7982:
-------------------------------------
    Fix Version/s:     (was: 0.24.0)

> UserGroupInformation fails to login if thread's context classloader can't load HadoopLoginModule
> ------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-7982
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7982
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 1.0.0, 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 1.1.0, 0.23.1
>
>         Attachments: hadoop-7982-branch-1.txt, hadoop-7982.txt, hdfs_threaded_test.c
>
>
> In a few hard-to-reproduce situations, we've seen a problem where the UGI login call
causes a failure to login exception with the following cause:
> Caused by: javax.security.auth.login.LoginException: unable to find 
> LoginModule class: org.apache.hadoop.security.UserGroupInformation 
> $HadoopLoginModule
> After a bunch of debugging, I determined that this happens when the login occurs in a
thread whose Context ClassLoader has been set to null.



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