I was running gradle tests on different machines parallely from the same shared code using jenkins. But the gradle test task hangs forever. From the threadump I observed that main thread is waiting for to aquire some lock.
could anyone please suggest a solution/workaround?
Thread dump of test executor.
"main" #1 prio=5 os_prio=0 cpu=1437.50ms elapsed=110.46s tid=0x0000020a6b317800 nid=0xeb4 waiting on condition [0x00000015996fe000]
java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park([email protected]/Native Method)
- parking to wait for <0x000000008233b800> (a java.util.concurrent.CountDownLatch$Sync)
at java.util.concurrent.locks.LockSupport.park([email protected]/LockSupport.java:194)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt([email protected]/AbstractQueuedSynchronizer.java:885)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly([email protected]/AbstractQueuedSynchronizer.java:1039)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly([email protected]/AbstractQueuedSynchronizer.java:1345)
at java.util.concurrent.CountDownLatch.await([email protected]/CountDownLatch.java:232)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:72)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:46)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:91)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:34)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:137)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:69)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:68)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:73)
"Reference Handler" #2 daemon prio=10 os_prio=2 cpu=46.88ms elapsed=110.42s tid=0x0000020a7aa32800 nid=0x20b0 waiting on condition [0x0000001599dfe000]
java.lang.Thread.State: RUNNABLE
at java.lang.ref.Reference.waitForReferencePendingList([email protected]/Native Method)
at java.lang.ref.Reference.processPendingReferences([email protected]/Reference.java:241)
at java.lang.ref.Reference$ReferenceHandler.run([email protected]/Reference.java:213)
"Finalizer" #3 daemon prio=8 os_prio=1 cpu=0.00ms elapsed=110.42s tid=0x0000020a7b262000 nid=0xe78 in Object.wait() [0x0000001599eff000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait([email protected]/Native Method)
- waiting on <no object reference available>
at java.lang.ref.ReferenceQueue.remove([email protected]/ReferenceQueue.java:155)
- waiting to re-lock in wait() <0x00000000811c6000> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove([email protected]/ReferenceQueue.java:176)
at java.lang.ref.Finalizer$FinalizerThread.run([email protected]/Finalizer.java:170)
"Signal Dispatcher" #4 daemon prio=9 os_prio=2 cpu=0.00ms elapsed=110.40s tid=0x0000020a7b2b7000 nid=0x150 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Attach Listener" #5 daemon prio=5 os_prio=2 cpu=187.50ms elapsed=110.40s tid=0x0000020a7b2b8000 nid=0x2014 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"C2 CompilerThread0" #6 daemon prio=9 os_prio=2 cpu=55750.00ms elapsed=110.40s tid=0x0000020a7b2ba800 nid=0x1eb4 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
No compile task
"C1 CompilerThread0" #8 daemon prio=9 os_prio=2 cpu=9015.63ms elapsed=110.40s tid=0x0000020a7b2c3000 nid=0x2d0 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
No compile task
"Sweeper thread" #9 daemon prio=9 os_prio=2 cpu=250.00ms elapsed=110.40s tid=0x0000020a7b2c4800 nid=0x1ca0 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Common-Cleaner" #10 daemon prio=8 os_prio=1 cpu=15.63ms elapsed=110.10s tid=0x0000020a7b543000 nid=0xdac in Object.wait() [0x000000159a4fe000]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait([email protected]/Native Method)
- waiting on <no object reference available>
at java.lang.ref.ReferenceQueue.remove([email protected]/ReferenceQueue.java:155)
- waiting to re-lock in wait() <0x00000000811c6370> (a java.lang.ref.ReferenceQueue$Lock)
at jdk.internal.ref.CleanerImpl.run([email protected]/CleanerImpl.java:148)
at java.lang.Thread.run([email protected]/Thread.java:834)
at jdk.internal.misc.InnocuousThread.run([email protected]/InnocuousThread.java:134)
"Service Thread" #11 daemon prio=9 os_prio=0 cpu=0.00ms elapsed=109.25s tid=0x0000020a7dacc000 nid=0x1e4c runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Test worker" #13 prio=5 os_prio=0 cpu=63062.50ms elapsed=108.92s tid=0x0000020a7e50d000 nid=0x1e54 runnable [0x000000159abf8000]
java.lang.Thread.State: RUNNABLE
at java.util.HashMap.hash([email protected]/HashMap.java:339)
at java.util.HashMap.putMapEntries([email protected]/HashMap.java:510)
at java.util.LinkedHashMap.<init>([email protected]/LinkedHashMap.java:384)
at sun.reflect.annotation.AnnotationParser.parseAnnotation2([email protected]/AnnotationParser.java:275)
at sun.reflect.annotation.AnnotationParser.parseAnnotations2([email protected]/AnnotationParser.java:121)
at sun.reflect.annotation.AnnotationParser.parseAnnotations([email protected]/AnnotationParser.java:73)
at java.lang.reflect.Executable.declaredAnnotations([email protected]/Executable.java:604)
- locked <0x000000008b03f940> (a java.lang.reflect.Method)
at java.lang.reflect.Executable.declaredAnnotations([email protected]/Executable.java:602)
- locked <0x000000008b03fa98> (a java.lang.reflect.Method)
at java.lang.reflect.Executable.getAnnotation([email protected]/Executable.java:572)
at java.lang.reflect.Method.getAnnotation([email protected]/Method.java:695)
at junit.framework.TestCase.runBare(TestCase.java:141)
at junit.framework.TestResult$1.protect(TestResult.java:122)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at junit.framework.TestResult.run(TestResult.java:125)
at junit.framework.TestCase.run(TestCase.java:129)
at junit.framework.TestSuite.runTest(TestSuite.java:255)
at junit.framework.TestSuite.run(TestSuite.java:250)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0([email protected]/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke([email protected]/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke([email protected]/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke([email protected]/Method.java:566)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:118)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0([email protected]/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke([email protected]/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke([email protected]/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke([email protected]/Method.java:566)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:412)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/ThreadPoolExecutor.java:1128)
at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/ThreadPoolExecutor.java:628)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
at java.lang.Thread.run([email protected]/Thread.java:834)
"/127.0.0.1:65320 to /127.0.0.1:65318 workers Thread 2" #14 prio=5 os_prio=0 cpu=31.25ms elapsed=108.76s tid=0x0000020a7e023800 nid=0x4b8 waiting on condition [0x000000159acfe000]
java.lang.Thread.State: WAITING (parking)
at jdk.internal.misc.Unsafe.park([email protected]/Native Method)
- parking to wait for <0x000000008233d130> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at java.util.concurrent.locks.LockSupport.park([email protected]/LockSupport.java:194)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await([email protected]/AbstractQueuedSynchronizer.java:2081)
at org.gradle.internal.remote.internal.hub.queue.EndPointQueue.take(EndPointQueue.java:49)
at org.gradle.internal.remote.internal.hub.MessageHub$ConnectionDispatch.run(MessageHub.java:320)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker([email protected]/ThreadPoolExecutor.java:1128)
at java.util.concurrent.ThreadPoolExecutor$Worker.run([email protected]/ThreadPoolExecutor.java:628)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
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