Github user neykov commented on the issue:
https://github.com/apache/brooklyn-library/pull/106
```
Found one Java-level deadlock:
=============================
"brooklyn-execmanager-tda7FakB-6":
waiting to lock monitor 0x00007fc8b5c32318 (object 0x00000007b2f294e8, a
java.util.Collections$SynchronizedMap),
which is held by "brooklyn-execmanager-tda7FakB-3"
"brooklyn-execmanager-tda7FakB-3":
waiting to lock monitor 0x00007fc8b800cd38 (object 0x00000007b2f291e0, a
java.util.LinkedHashSet),
which is held by "brooklyn-execmanager-tda7FakB-6"
Java stack information for the threads listed above:
===================================================
"brooklyn-execmanager-tda7FakB-6":
at java.util.Collections$SynchronizedMap.put(Collections.java:2041)
- waiting to lock <0x00000007b2f294e8> (a
java.util.Collections$SynchronizedMap)
at
org.apache.brooklyn.core.sensor.AttributeMap.update(AttributeMap.java:122)
at
org.apache.brooklyn.core.sensor.AttributeMap.updateWithoutPublishing(AttributeMap.java:147)
at
org.apache.brooklyn.core.sensor.AttributeMap.update(AttributeMap.java:132)
at
org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.set(AbstractEntity.java:1111)
at
org.apache.brooklyn.entity.group.AbstractGroupImpl.removeMember(AbstractGroupImpl.java:189)
- locked <0x00000007b2f291e0> (a java.util.LinkedHashSet)
at
org.apache.brooklyn.entity.group.DynamicGroupImpl.rescanEntities(DynamicGroupImpl.java:233)
- locked <0x00000007b2f291d0> (a java.lang.Object)
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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
at
groovy.lang.DelegatingMetaClass.invokeMethod(DelegatingMetaClass.java:149)
at groovy.lang.MetaObjectProtocol$invokeMethod.call(Unknown Source)
at
org.apache.brooklyn.util.groovy.GroovyJavaMethods.invokeMethodOnMetaClass(GroovyJavaMethods.java:211)
at
org.apache.brooklyn.core.mgmt.internal.AbstractManagementContext.invokeEffectorMethodLocal(AbstractManagementContext.java:283)
at
org.apache.brooklyn.core.mgmt.internal.AbstractManagementContext.invokeEffectorMethodSync(AbstractManagementContext.java:308)
at
org.apache.brooklyn.core.mgmt.internal.EffectorUtils.invokeMethodEffector(EffectorUtils.java:276)
at
org.apache.brooklyn.core.effector.MethodEffector.call(MethodEffector.java:153)
at
org.apache.brooklyn.core.effector.AbstractEffector.call(AbstractEffector.java:61)
at
org.apache.brooklyn.core.effector.AbstractEffector$1$1.call(AbstractEffector.java:83)
at
org.apache.brooklyn.util.core.task.DynamicSequentialTask$DstJob.call(DynamicSequentialTask.java:363)
at
org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:529)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
"brooklyn-execmanager-tda7FakB-3":
at
org.apache.brooklyn.entity.group.AbstractGroupImpl.getMembers(AbstractGroupImpl.java:270)
- waiting to lock <0x00000007b2f291e0> (a java.util.LinkedHashSet)
at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.brooklyn.core.objs.proxy.EntityProxyImpl.invoke(EntityProxyImpl.java:189)
at com.sun.proxy.$Proxy14.getMembers(Unknown Source)
at
org.apache.brooklyn.core.mgmt.internal.AbstractSubscriptionManager$2.apply(AbstractSubscriptionManager.java:139)
at
org.apache.brooklyn.core.mgmt.internal.AbstractSubscriptionManager$2.apply(AbstractSubscriptionManager.java:1)
at
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager.submitPublishEvent(LocalSubscriptionManager.java:225)
at
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager.publish(LocalSubscriptionManager.java:216)
at
org.apache.brooklyn.core.mgmt.internal.BasicSubscriptionContext.publish(BasicSubscriptionContext.java:176)
at
org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.emitInternal(AbstractEntity.java:1213)
at
org.apache.brooklyn.core.entity.AbstractEntity.emitInternal(AbstractEntity.java:1993)
at
org.apache.brooklyn.core.sensor.AttributeMap.update(AttributeMap.java:133)
at
org.apache.brooklyn.core.sensor.AttributeMap.modify(AttributeMap.java:162)
- locked <0x00000007b2f294e8> (a java.util.Collections$SynchronizedMap)
at
org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.modify(AbstractEntity.java:1154)
at
org.apache.brooklyn.core.enricher.AbstractEnricher.emit(AbstractEnricher.java:135)
at
org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic$ComputeServiceState.setActualState(ServiceStateLogic.java:366)
at
org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic$ComputeServiceState.onEvent(ServiceStateLogic.java:314)
at
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager$1.run(LocalSubscriptionManager.java:276)
at
org.apache.brooklyn.util.concurrent.CallableFromRunnable.call(CallableFromRunnable.java:44)
at
org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:529)
at
org.apache.brooklyn.util.core.task.SingleThreadedScheduler$1.call(SingleThreadedScheduler.java:116)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Found 1 deadlock.
```
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