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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12656) MiniKdc throws "address in use" BindException
Date Thu, 17 Dec 2015 21:13:46 GMT
Wei-Chiu Chuang created HADOOP-12656:
----------------------------------------

             Summary: MiniKdc throws "address in use" BindException
                 Key: HADOOP-12656
                 URL: https://issues.apache.org/jira/browse/HADOOP-12656
             Project: Hadoop Common
          Issue Type: Bug
         Environment: Jenkins
            Reporter: Wei-Chiu Chuang


Another address in use error.

I saw the test TestKerberosAuthenticationHandler.testNameRules failed due to porting binding
error.
https://builds.apache.org/job/Hadoop-common-trunk-Java8/827/testReport/org.apache.hadoop.security.authentication.server/TestKerberosAuthenticationHandler/testNameRules/

Looking at MiniKdc implementation, if port is 0, the constructor use ServerSocket to find
an unused port, assign the port number to the member variable {{port}} and close the ServerSocket
object; later, in {{initKDCServer()}}, instantiate a TcpTransport object and bind at that
port. 

It appears that the port may be used in between, and then throw the exception.



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