Wei-Chiu Chuang created HADOOP-12656:
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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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