jiazhai edited a comment on issue #3157: Refactored PulsarRecordCursor to avoid intermediate thread URL: https://github.com/apache/pulsar/pull/3157#issuecomment-449949249 @merlimat [Here](https://builds.apache.org/job/pulsar_precommit_java8/5506/testReport/junit/org.apache.pulsar.sql.presto/TestPulsarRecordCursor/setup/) is the error in the report: ``` org.apache.pulsar.sql.presto.TestPulsarRecordCursor.setup java.lang.NullPointerException at java.util.concurrent.ConcurrentLinkedQueue.checkNotNull(ConcurrentLinkedQueue.java:920) at java.util.concurrent.ConcurrentLinkedQueue.offer(ConcurrentLinkedQueue.java:327) at java.util.concurrent.ConcurrentLinkedQueue.add(ConcurrentLinkedQueue.java:297) at org.mockito.internal.stubbing.StubbedInvocationMatcher.addAnswer(StubbedInvocationMatcher.java:38) at org.mockito.internal.stubbing.InvocationContainerImpl.addAnswer(InvocationContainerImpl.java:65) at org.mockito.internal.stubbing.InvocationContainerImpl.setMethodForStubbing(InvocationContainerImpl.java:110) at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:54) at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29) at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:38) at org.powermock.api.mockito.repackaged.MethodInterceptorFilter.intercept(MethodInterceptorFilter.java:60) at org.apache.pulsar.client.admin.PulsarAdmin$$EnhancerByMockitoWithCGLIB$$b47fd21.namespaces(<generated>) at org.apache.pulsar.sql.presto.TestPulsarConnector.setup(TestPulsarConnector.java:765) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ```
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