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From "Kan Zhang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-6913) Circular initialization between UserGroupInformation and KerberosName
Date Wed, 11 Aug 2010 18:16:18 GMT
Circular initialization between UserGroupInformation and KerberosName

                 Key: HADOOP-6913
                 URL: https://issues.apache.org/jira/browse/HADOOP-6913
             Project: Hadoop Common
          Issue Type: Bug
            Reporter: Kan Zhang
            Assignee: Kan Zhang

If the first call to UGI is UGI.setConfiguration(conf), it will try to initialize UGI class.
During this initialization, the code calls KerberosName.setConfiguration(). KerberosName's
static initializer will in turn call UGI.isSecurityEnabled(). Since UGI hasn't been completely
initialized yet, isSecurityEnabled() will re-initialize UGI with a DEFAULT conf. As a result,
the original conf used in UGI.setConfiguration(conf) will be overwritten by the DEFAULT conf.

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