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https://issues.apache.org/jira/browse/HADOOP-6913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897506#action_12897506
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Devaraj Das commented on HADOOP-6913:
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+1
> Circular initialization between UserGroupInformation and KerberosName
> ---------------------------------------------------------------------
>
> Key: HADOOP-6913
> URL: https://issues.apache.org/jira/browse/HADOOP-6913
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Reporter: Kan Zhang
> Assignee: Kan Zhang
> Attachments: c6913-01.patch
>
>
> 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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