[KAFKA-8126] Flaky Test org.apache.kafka.connect.runtime.WorkerTest.testAddRemoveTask

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.2, 2.3.0, 2.1.2, 2.2.1
• Component/s: connect, unit tests
• Assignee: Unassigned
• Reporter: Guozhang Wang
• Created: 19/Mar/19 04:23
• Updated: 03/Apr/19 20:25
• Resolved: 03/Apr/19 20:23

Description

Stacktrace
java.lang.AssertionError: 
  Expectation failure on verify:
    WorkerSourceTask.run(): expected: 1, actual: 0
	at org.easymock.internal.MocksControl.verify(MocksControl.java:242)
	at org.powermock.api.easymock.internal.invocationcontrol.EasyMockMethodInvocationControl.verify(EasyMockMethodInvocationControl.java:126)
	at org.powermock.api.easymock.PowerMock.verify(PowerMock.java:1476)
	at org.powermock.api.easymock.PowerMock.verifyAll(PowerMock.java:1415)
	at org.apache.kafka.connect.runtime.WorkerTest.testAddRemoveTask(WorkerTest.java:589)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)

https://builds.apache.org/job/kafka-pr-jdk11-scala2.12/3330/testReport/junit/org.apache.kafka.connect.runtime/WorkerTest/testAddRemoveTask/

Issue Links

• is related to: KAFKA-5141 WorkerTest.testCleanupTasksOnStop transient failure due to NPE
• is related to: KAFKA-8063 Flaky Test WorkerTest#testConverterOverrides
• relates to: KAFKA-5141 WorkerTest.testCleanupTasksOnStop transient failure due to NPE
• relates to: KAFKA-8063 Flaky Test WorkerTest#testConverterOverrides
• links to: GitHub Pull Request #6475