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 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira