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https://issues.apache.org/jira/browse/HADOOP-12090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567232#comment-15567232
]
John Zhuge commented on HADOOP-12090:
-------------------------------------
Thanks [~sjlee0] for the clarification. Increasing socket buffer size to 64K
does fix my issues!
BTW, what is the purpose of change to {{hadoop-minikdc/pom.xml}} in patch 002?
> minikdc-related unit tests fail consistently on some platforms
> --------------------------------------------------------------
>
> Key: HADOOP-12090
> URL: https://issues.apache.org/jira/browse/HADOOP-12090
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms, test
> Affects Versions: 2.7.0
> Reporter: Sangjin Lee
> Assignee: Sangjin Lee
> Attachments: HADOOP-12090.001.patch, HADOOP-12090.002.patch
>
>
> On some platforms all unit tests that use minikdc fail consistently. Those
> tests include TestKMS, TestSaslDataTransfer,
> TestTimelineAuthenticationFilter, etc.
> Typical failures on the unit tests:
> {noformat}
> java.lang.AssertionError:
> org.apache.hadoop.security.authentication.client.AuthenticationException:
> GSSException: No valid credentials provided (Mechanism level: Cannot get a
> KDC reply)
> at org.junit.Assert.fail(Assert.java:88)
> at
> org.apache.hadoop.crypto.key.kms.server.TestKMS$8$4.run(TestKMS.java:1154)
> at
> org.apache.hadoop.crypto.key.kms.server.TestKMS$8$4.run(TestKMS.java:1145)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1645)
> at
> org.apache.hadoop.crypto.key.kms.server.TestKMS.doAs(TestKMS.java:261)
> at
> org.apache.hadoop.crypto.key.kms.server.TestKMS.access$100(TestKMS.java:76)
> {noformat}
> The errors that cause this failure on the KDC server on the minikdc are a
> NullPointerException:
> {noformat}
> org.apache.mina.filter.codec.ProtocolDecoderException:
> java.lang.NullPointerException: message (Hexdump: ...)
> at
> org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:234)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:48)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:802)
> at
> org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:120)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
> at
> org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426)
> at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:604)
> at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:564)
> at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:553)
> at
> org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:57)
> at
> org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:892)
> at
> org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:65)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException: message
> at
> org.apache.mina.filter.codec.AbstractProtocolDecoderOutput.write(AbstractProtocolDecoderOutput.java:44)
> at
> org.apache.directory.server.kerberos.protocol.codec.MinaKerberosDecoder.decode(MinaKerberosDecoder.java:65)
> at
> org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:224)
> ... 15 more
> {noformat}
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