[BAHIR-231] unit test failed in ActiveMQConnectorITCase

• Type: Bug
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: Flink-1.0
• Component/s: Flink Streaming Connectors
• Assignee: Unassigned
• Reporter: zhouli
• Created: 22/May/20 07:04
• Updated: 22/May/20 07:06

Description

there are some problems with the test methods in org.apache.flink.streaming.connectors.activemq.ActiveMQConnectorITCase.
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problem: method amqTopologyWithQueue and amqTopologyWithTopic will never end

reason: the parallelism of flink task should set to 1
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problem: method amqTopologyWithCheckpointing failed, here are the exception stack：
java.lang.NullPointerException at org.apache.flink.streaming.api.functions.source.MessageAcknowledgingSourceBase.addId(MessageAcknowledgingSourceBase.java:197) at org.apache.flink.streaming.connectors.activemq.AMQSource.run(AMQSource.java:229) at org.apache.flink.streaming.connectors.activemq.ActiveMQConnectorITCase$3.run(ActiveMQConnectorITCase.java:189) at java.lang.Thread.run(Thread.java:748)
java.lang.IllegalStateException: The AMQSource has not been properly initialized.
at org.apache.flink.util.Preconditions.checkState(Preconditions.java:195) at org.apache.flink.streaming.api.functions.source.MessageAcknowledgingSourceBase.snapshotState(MessageAcknowledgingSourceBase.java:208) at org.apache.flink.streaming.connectors.activemq.ActiveMQConnectorITCase.amqTopologyWithCheckpointing(ActiveMQConnectorITCase.java:203) 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:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

reason: before calling snapshotState method, we should call snapshotState method first