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https://issues.apache.org/jira/browse/HADOOP-12656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15064918#comment-15064918
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Wei-Chiu Chuang commented on HADOOP-12656:
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Passed all tests.
The existing test TestMiniKdc#testMiniKdcStart() verifies the bug, so no
additional test are needed.
> 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
> Assignee: Wei-Chiu Chuang
> Attachments: HADOOP-12656.001.patch
>
>
> 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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