Xiaoyu Yao created HADOOP-14139:
-----------------------------------

             Summary: Tracing canonized server name from HTTP request during 
SPNEGO
                 Key: HADOOP-14139
                 URL: https://issues.apache.org/jira/browse/HADOOP-14139
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
            Reporter: Xiaoyu Yao
            Assignee: Hanisha Koneru
            Priority: Minor


The serverName can be helpful to trouble shoot SPNEGO related authenticated 
issue.

{code}
 final String serverName = InetAddress.getByName(request.getServerName())
                                           .getCanonicalHostName();
{code}




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