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https://issues.apache.org/jira/browse/HADOOP-7982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13189614#comment-13189614
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Hudson commented on HADOOP-7982:
--------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #1577 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/1577/])
HADOOP-7982. UserGroupInformation fails to login if thread's context
classloader can't load HadoopLoginModule. Contributed by Todd Lipcon.
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1233751
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
> 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: 0.23.0, 1.0.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.24.0, 0.23.1, 1.1.0
>
> Attachments: hadoop-7982-branch-1.txt, hadoop-7982.txt
>
>
> 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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