git clone https://github.com/pkremens/wildfly.git -b jbeap-4494-reproduce
cd wildfly
./build.sh -DskipTests
./integration-tests.sh -Dts.noSmoke -Dts.clustering

testGracefulServeOnUndeploy(org.jboss.as.test.clustering.cluster.web.DistributableTestCase)  Time elapsed: 11.31 sec  <<< ERROR!
java.lang.NullPointerException: null
	at org.jboss.as.arquillian.container.ServerSetupObserver.handleAfterUndeploy(ServerSetupObserver.java:155)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:145)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:116)
	at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)
	at org.jboss.arquillian.container.impl.client.container.ContainerDeployController$4.call(ContainerDeployController.java:226)
	at org.jboss.arquillian.container.impl.client.container.ContainerDeployController$4.call(ContainerDeployController.java:185)
	at org.jboss.arquillian.container.impl.client.container.ContainerDeployController.executeOperation(ContainerDeployController.java:271)
	at org.jboss.arquillian.container.impl.client.container.ContainerDeployController.undeploy(ContainerDeployController.java:184)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
	at org.jboss.arquillian.container.impl.client.ContainerDeploymentContextHandler.createDeploymentContext(ContainerDeploymentContextHandler.java:78)
	at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.container.impl.client.ContainerDeploymentContextHandler.createContainerContext(ContainerDeploymentContextHandler.java:57)
	at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:145)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:116)
	at org.jboss.arquillian.core.impl.EventImpl.fire(EventImpl.java:67)
	at org.jboss.arquillian.container.test.impl.client.deployment.ClientDeployer.undeploy(ClientDeployer.java:132)
	at org.jboss.as.test.clustering.NodeUtil.undeploy(NodeUtil.java:49)
	at org.jboss.as.test.clustering.cluster.ClusterAbstractTestCase.afterTestMethod(ClusterAbstractTestCase.java:101)
	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$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:33)
	at org.jboss.arquillian.junit.Arquillian$StatementLifecycleExecutor.invoke(Arquillian.java:459)
	at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.execute(ClientBeforeAfterLifecycleEventExecuter.java:99)
	at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.on(ClientBeforeAfterLifecycleEventExecuter.java:80)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
	at org.jboss.arquillian.testenricher.cdi.CreationalContextDestroyer.destory(CreationalContextDestroyer.java:44)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createContext(ContainerEventController.java:142)
	at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createAfterContext(ContainerEventController.java:134)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.junit.extension.UpdateTestResultBeforeAfter.update(UpdateTestResultBeforeAfter.java:54)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:130)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:92)
	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:73)
	at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:145)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:116)
	at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.after(EventTestRunnerAdaptor.java:122)
	at org.jboss.arquillian.junit.Arquillian$5$1.evaluate(Arquillian.java:264)
	at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:422)
	at org.jboss.arquillian.junit.Arquillian.access$200(Arquillian.java:54)
	at org.jboss.arquillian.junit.Arquillian$5.evaluate(Arquillian.java:259)
	at org.jboss.arquillian.junit.Arquillian$7$1.invoke(Arquillian.java:315)
	at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.execute(ClientBeforeAfterLifecycleEventExecuter.java:99)
	at org.jboss.arquillian.container.test.impl.execution.ClientBeforeAfterLifecycleEventExecuter.on(ClientBeforeAfterLifecycleEventExecuter.java:72)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.invokeObservers(EventContextImpl.java:99)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:81)
	at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createContext(ContainerEventController.java:142)
	at org.jboss.arquillian.container.test.impl.client.ContainerEventController.createBeforeContext(ContainerEventController.java:124)
	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.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createTestContext(TestContextHandler.java:130)
	at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createClassContext(TestContextHandler.java:92)
	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.test.impl.TestContextHandler.createSuiteContext(TestContextHandler.java:73)
	at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jboss.arquillian.core.impl.ObserverImpl.invoke(ObserverImpl.java:94)
	at org.jboss.arquillian.core.impl.EventContextImpl.proceed(EventContextImpl.java:88)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:145)
	at org.jboss.arquillian.core.impl.ManagerImpl.fire(ManagerImpl.java:116)
	at org.jboss.arquillian.test.impl.EventTestRunnerAdaptor.fireCustomLifecycle(EventTestRunnerAdaptor.java:159)
	at org.jboss.arquillian.junit.Arquillian$7.evaluate(Arquillian.java:311)
	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.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:204)
	at org.jboss.arquillian.junit.Arquillian.multiExecute(Arquillian.java:422)
	at org.jboss.arquillian.junit.Arquillian.access$200(Arquillian.java:54)
	at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:218)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.jboss.arquillian.junit.Arquillian.run(Arquillian.java:166)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	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.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	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.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:107)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:77)
	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:53)
	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:144)
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)