Test hangs when trying to initialize the mock

[nitinpasula]

Hi

I have weird issue going on, this happens only on a linux VM where the test is run The tests hangs when it is trying to initialize the mock. Here is the snippet from thread dump

"RMI TCP Connection(11)-132.253.8.162" Id=155 daemon prio=5 RUNNABLE (in native) Blocked (cnt): 4; Waited (cnt): 6 CPU nanos: 316001400; User nanos: 290000000; Bytes allocated: 16268048 Method context: 10wdtwi;i3qgy3di;22299;3k824z;2; DB session: 384 at sun.tools.attach.LinuxVirtualMachine.read(Native Method) at sun.tools.attach.LinuxVirtualMachine$SocketInputStream.read(LinuxVirtualMachine.java:259)

• locked sun.tools.attach.LinuxVirtualMachine$SocketInputStream@447efcee at sun.tools.attach.HotSpotVirtualMachine.readInt(HotSpotVirtualMachine.java:236) at sun.tools.attach.LinuxVirtualMachine.execute(LinuxVirtualMachine.java:199) at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:58) at sun.tools.attach.HotSpotVirtualMachine.loadAgentLibrary(HotSpotVirtualMachine.java:79) at sun.tools.attach.HotSpotVirtualMachine.loadAgent(HotSpotVirtualMachine.java:103) at mockit.internal.startup.JDK6AgentLoader.loadAgentAndDetachFromThisVM(JDK6AgentLoader.java:117) at mockit.internal.startup.JDK6AgentLoader.loadAgent(JDK6AgentLoader.java:61) at mockit.internal.startup.AgentInitialization.initializeAccordingToJDKVersion(AgentInitialization.java:21) at mockit.internal.startup.Startup.verifyInitialization(Startup.java:173) at mockit.MockUp.(MockUp.java:39) at wt.ownership.ixb.handlers.forattributes.ExpImpForOwnershipIndustrializationTestInteg.beforeClass(ExpImpForOwnershipIndustrializationTestInteg.java:201) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at com.ptc.test.remote.Server$ServerRunner.run(Server.java:185) at com.ptc.test.core.ConditionalRunner.run(ConditionalRunner.java:94) at org.junit.runners.Suite.runChild(Suite.java:127) at org.junit.runners.Suite.runChild(Suite.java:26) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.junit.runner.JUnitCore.run(JUnitCore.java:160) at org.junit.runner.JUnitCore.run(JUnitCore.java:138) at org.junit.runner.JUnitCore.run(JUnitCore.java:117) at com.ptc.test.remote.Server$RemoteExecutor.runRemote(Server.java:244) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at wt.method.MethodResultWriter.writeExternal(MethodResultWriter.java:152) at wt.method.MethodResult.writeExternal(MethodResult.java:226) at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1455) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1429) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at sun.rmi.server.UnicastRef.marshalValue(UnicastRef.java:293) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:332) at sun.rmi.transport.Transport$1.run(Transport.java:177) at sun.rmi.transport.Transport$1.run(Transport.java:174) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:173) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Locked synchronizers:
• java.util.concurrent.ThreadPoolExecutor$Worker@2c65008b

"JMX Monitor ThreadGroup

Executor Pool [Thread-1]" Id=154 daemon prio=5 TIMED_WAITING on lock=java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@5603731e Blocked (cnt): 0; Waited (cnt): 1 CPU nanos: 79011889; User nanos: 70000000; Bytes allocated: 28760 at sun.misc.Unsafe.park(Native Method) at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2082) at java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467) at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)

[rliesenfeld]

What is the JDK/JRE being used to run tests? Is it an Oracle JDK, or OpenJDK? Which version? If it is OpenJDK, did you try the Oracle JDK too?

As a workaround, JMockit can also be initialized with the "-javaagent:jmockit.jar" JVM parameter, which avoids use of the "attach" API seen in the stack trace.