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https://issues.apache.org/jira/browse/HDFS-14757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16911847#comment-16911847
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Chen Zhang commented on HDFS-14757:
-----------------------------------
Hi [~jojochuang] is it failed on trunk, the line number in stack-trace is very
different with trunk code.
> TestBalancerRPCDelay.testBalancerRPCDelay failed
> ------------------------------------------------
>
> Key: HDFS-14757
> URL: https://issues.apache.org/jira/browse/HDFS-14757
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Reporter: Wei-Chiu Chuang
> Priority: Major
>
> {noformat}
> Error Message
> Unfinished stubbing detected here:
> -> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.spyFSNamesystem(TestBalancer.java:1948)
> E.g. thenReturn() may be missing.
> Examples of correct stubbing:
> when(mock.isOk()).thenReturn(true);
> when(mock.isOk()).thenThrow(exception);
> doThrow(exception).when(mock).someVoidMethod();
> Hints:
> 1. missing thenReturn()
> 2. although stubbed methods may return mocks, you cannot inline mock
> creation (mock()) call inside a thenReturn method (see issue 53)
> Stacktrace
> org.mockito.exceptions.misusing.UnfinishedStubbingException:
> Unfinished stubbing detected here:
> -> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.spyFSNamesystem(TestBalancer.java:1948)
> E.g. thenReturn() may be missing.
> Examples of correct stubbing:
> when(mock.isOk()).thenReturn(true);
> when(mock.isOk()).thenThrow(exception);
> doThrow(exception).when(mock).someVoidMethod();
> Hints:
> 1. missing thenReturn()
> 2. although stubbed methods may return mocks, you cannot inline mock
> creation (mock()) call inside a thenReturn method (see issue 53)
> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.spyFSNamesystem(TestBalancer.java:1957)
> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.doTest(TestBalancer.java:811)
> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancer.testBalancerRPCDelay(TestBalancer.java:1976)
> at
> org.apache.hadoop.hdfs.server.balancer.TestBalancerRPCDelay.testBalancerRPCDelay(TestBalancerRPCDelay.java:30)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}
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