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https://issues.apache.org/jira/browse/BROOKLYN-245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Aled Sage resolved BROOKLYN-245.
--------------------------------
Resolution: Fixed
Assignee: Aled Sage
Fix Version/s: 0.9.0
> Deadlock from ControlledDynamicWebAppCluster, plus thread modifying attribute
> -----------------------------------------------------------------------------
>
> Key: BROOKLYN-245
> URL: https://issues.apache.org/jira/browse/BROOKLYN-245
> Project: Brooklyn
> Issue Type: Bug
> Reporter: Aled Sage
> Assignee: Aled Sage
> Fix For: 0.9.0
>
>
> With master (i.e. would also affect 0.9.0)...
> When running {{org.apache.brooklyn.qa.load.LoadTest}} several times, I hit
> the deadlock below.
> The test deploys several apps concurrently, each using
> {{ControlledDynamicWebAppCluster}} (via the Java-app
> {{SimulatedTheeTierApp}}). This deadlock could happen in other uses of
> {{ControlledDynamicWebAppCluster}}, or in other entities depending if/when
> they synchronize on the entity themselves.
> {noformat}
> Java stack information for the threads listed above:
> ===================================================
> "brooklyn-execmanager-H7Adif6C-157":
> at
> org.apache.brooklyn.core.sensor.AttributeMap.asMap(AttributeMap.java:92)
> - waiting to lock <0x00000007d3504b60> (a
> java.util.Collections$SynchronizedMap)
> at
> org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.getAll(AbstractEntity.java:1129)
> at
> org.apache.brooklyn.core.entity.AbstractEntity.getAllAttributes(AbstractEntity.java:1003)
> at
> org.apache.brooklyn.core.mgmt.rebind.dto.MementosGenerators.newEntityMementoBuilder(MementosGenerators.java:194)
> at
> org.apache.brooklyn.core.mgmt.rebind.BasicEntityRebindSupport.getMementoWithProperties(BasicEntityRebindSupport.java:69)
> at
> org.apache.brooklyn.core.mgmt.rebind.BasicEntityRebindSupport.getMemento(BasicEntityRebindSupport.java:61)
> at
> org.apache.brooklyn.core.mgmt.rebind.BasicEntityRebindSupport.getMemento(BasicEntityRebindSupport.java:1)
> at
> org.apache.brooklyn.core.mgmt.rebind.PeriodicDeltaChangeListener.persistNowInternal(PeriodicDeltaChangeListener.java:417)
> at
> org.apache.brooklyn.core.mgmt.rebind.PeriodicDeltaChangeListener.persistNowSafely(PeriodicDeltaChangeListener.java:352)
> at
> org.apache.brooklyn.core.mgmt.rebind.PeriodicDeltaChangeListener.persistNowSafely(PeriodicDeltaChangeListener.java:346)
> at
> org.apache.brooklyn.core.mgmt.rebind.PeriodicDeltaChangeListener$1$1.call(PeriodicDeltaChangeListener.java:215)
> at
> org.apache.brooklyn.core.mgmt.rebind.PeriodicDeltaChangeListener$1$1.call(PeriodicDeltaChangeListener.java:1)
> at
> org.apache.brooklyn.util.core.task.BasicExecutionManager$ScheduledTaskCallable$1.call(BasicExecutionManager.java:436)
> at
> org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:519)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> "brooklyn-execmanager-H7Adif6C-16":
> at
> org.apache.brooklyn.core.entity.AbstractEntity$BasicSubscriptionSupport.getSubscriptionContext(AbstractEntity.java:1488)
> - waiting to lock <0x00000007d34abc20> (a
> org.apache.brooklyn.entity.webapp.ControlledDynamicWebAppClusterImpl)
> at
> org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.emitInternal(AbstractEntity.java:1164)
> at
> org.apache.brooklyn.core.entity.AbstractEntity.emitInternal(AbstractEntity.java:2021)
> at
> org.apache.brooklyn.core.sensor.AttributeMap.update(AttributeMap.java:133)
> at
> org.apache.brooklyn.core.sensor.AttributeMap.modify(AttributeMap.java:162)
> - locked <0x00000007d3504b60> (a
> java.util.Collections$SynchronizedMap)
> at
> org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.modify(AbstractEntity.java:1106)
> at
> org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.updateMapSensorEntry(ServiceStateLogic.java:150)
> at
> org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.clearMapSensorEntry(ServiceStateLogic.java:102)
> at
> org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic$ComputeServiceIndicatorsFromChildrenAndMembers.updateMapSensor(ServiceStateLogic.java:558)
> at
> org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic$ComputeServiceIndicatorsFromChildrenAndMembers.onUpdated(ServiceStateLogic.java:477)
> at
> org.apache.brooklyn.enricher.stock.AbstractAggregator$8.onEvent(AbstractAggregator.java:178)
> at
> org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager$2.run(LocalSubscriptionManager.java:244)
> at
> org.apache.brooklyn.util.concurrent.CallableFromRunnable.call(CallableFromRunnable.java:43)
> at
> org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:519)
> 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)
> "brooklyn-execmanager-H7Adif6C-4":
> at java.util.Collections$SynchronizedMap.get(Collections.java:2037)
> - waiting to lock <0x00000007d3504b60> (a
> java.util.Collections$SynchronizedMap)
> at
> org.apache.brooklyn.core.sensor.AttributeMap.getValue(AttributeMap.java:200)
> at
> org.apache.brooklyn.core.sensor.AttributeMap.getValue(AttributeMap.java:206)
> at
> org.apache.brooklyn.core.entity.AbstractEntity$BasicSensorSupport.get(AbstractEntity.java:1038)
> at
> org.apache.brooklyn.core.entity.AbstractEntity.getAttribute(AbstractEntity.java:946)
> at
> org.apache.brooklyn.entity.webapp.ControlledDynamicWebAppClusterImpl.getCluster(ControlledDynamicWebAppClusterImpl.java:194)
> - locked <0x00000007d34abc20> (a
> org.apache.brooklyn.entity.webapp.ControlledDynamicWebAppClusterImpl)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.brooklyn.core.objs.proxy.EntityProxyImpl.invoke(EntityProxyImpl.java:213)
> at com.sun.proxy.$Proxy57.getCluster(Unknown Source)
> at
> org.apache.brooklyn.qa.load.SimulatedTheeTierApp.init(SimulatedTheeTierApp.java:102)
> at
> org.apache.brooklyn.core.objs.proxy.InternalEntityFactory$1.run(InternalEntityFactory.java:327)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at
> org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:519)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> Found 1 deadlock.
> {noformat}
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