Aled Sage created BROOKLYN-570:
----------------------------------
Summary: Brooklyn hangs with custom java entity synchronizing on
self
Key: BROOKLYN-570
URL: https://issues.apache.org/jira/browse/BROOKLYN-570
Project: Brooklyn
Issue Type: Bug
Reporter: Aled Sage
If you have a custom Java entity your start method calls a {{synchronized}}
method (synchronizing on {{this}}), in which it tries to resolve DSL then it
can hang.
See snippets from {{jstack}} below:
{noformat}
"brooklyn-execmanager-sUNO5Yoi-102918" #220491 daemon prio=5 os_prio=31
tid=0x00007faf342f7800 nid=0x2967b waiting for monitor entry
[0x000070000ef04000]
java.lang.Thread.State: BLOCKED (on object monitor)
at
org.apache.brooklyn.core.entity.AbstractEntity.setApplication(AbstractEntity.java:753)
- waiting to lock <0x0000000797da2ad8> (a com.acme.MyEntityImpl)
at
org.apache.brooklyn.core.entity.AbstractEntity.getApplication(AbstractEntity.java:744)
at
org.apache.brooklyn.camp.brooklyn.spi.dsl.methods.DslComponent$EntityInScopeFinder.callImpl(DslComponent.java:257)
at
org.apache.brooklyn.camp.brooklyn.spi.dsl.methods.DslComponent$EntityInScopeFinder.call(DslComponent.java:225)
at
org.apache.brooklyn.camp.brooklyn.spi.dsl.methods.DslComponent$EntityInScopeFinder.call(DslComponent.java:192)
at
org.apache.brooklyn.util.core.task.DynamicSequentialTask$DstJob.call(DynamicSequentialTask.java:364)
at
org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:565)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
"brooklyn-execmanager-sUNO5Yoi-102898" #220470 daemon prio=5 os_prio=31
tid=0x00007faf390a8800 nid=0x23477 waiting on condition [0x00007000040ff000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000007984a3ff0> (a
java.util.concurrent.FutureTask)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
at java.util.concurrent.FutureTask.get(FutureTask.java:191)
at
com.google.common.util.concurrent.ForwardingFuture.get(ForwardingFuture.java:63)
at org.apache.brooklyn.util.core.task.BasicTask.get(BasicTask.java:384)
at org.apache.brooklyn.util.time.Durations.get(Durations.java:43)
at org.apache.brooklyn.util.time.Durations.get(Durations.java:68)
at
org.apache.brooklyn.util.core.task.ValueResolver.getMaybeInternal(ValueResolver.java:499)
at
org.apache.brooklyn.util.core.task.ValueResolver.getMaybe(ValueResolver.java:324)
at
org.apache.brooklyn.util.core.task.ValueResolver.get(ValueResolver.java:317)
at org.apache.brooklyn.util.core.task.Tasks.resolveValue(Tasks.java:159)
at
org.apache.brooklyn.core.config.BasicConfigKey.resolveValue(BasicConfigKey.java:447)
at
org.apache.brooklyn.core.config.BasicConfigKey.extractValue(BasicConfigKey.java:432)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.resolveRawValueFromContainerIgnoringDeprecatedNames(AbstractConfigMapImpl.java:352)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.resolveRawValueFromContainer(AbstractConfigMapImpl.java:324)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl$3.apply(AbstractConfigMapImpl.java:433)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl$3.apply(AbstractConfigMapImpl.java:429)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.getConfigImpl(AbstractConfigMapImpl.java:446)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.getConfig(AbstractConfigMapImpl.java:113)
at
org.apache.brooklyn.core.objs.AbstractConfigurationSupportInternal.get(AbstractConfigurationSupportInternal.java:161)
at io.com.acme.MyEntityImpl.getTarget(MyEntityImpl.java:106)
at com.acme.MyEntityImpl.setupSubscriptions(MyEntityImpl.java:77)
- locked <0x0000000797da2ad8> (a com.acme.MyEntityImpl)
at com.acme.MyEntityImpl.doStart(MyEntityImpl.java:66)
at com.acme.AbstractMyEntityImpl.start(AbstractMyEntityImpl.java:63)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.brooklyn.util.javalang.Reflections.invokeMethodFromArgs(Reflections.java:984)
at
org.apache.brooklyn.util.javalang.Reflections.invokeMethodFromArgs(Reflections.java:871)
at
org.apache.brooklyn.util.javalang.Reflections.invokeMethodFromArgs(Reflections.java:857)
at
org.apache.brooklyn.util.javalang.Reflections.invokeMethodFromArgs(Reflections.java:852)
at
org.apache.brooklyn.core.mgmt.internal.AbstractManagementContext.invokeEffectorMethodLocal(AbstractManagementContext.java:327)
at
org.apache.brooklyn.core.mgmt.internal.AbstractManagementContext.invokeEffectorMethodSync(AbstractManagementContext.java:366)
at
org.apache.brooklyn.core.mgmt.internal.EffectorUtils.invokeMethodEffector(EffectorUtils.java:274)
at
org.apache.brooklyn.core.effector.MethodEffector.call(MethodEffector.java:153)
at
org.apache.brooklyn.core.entity.trait.Startable$StartEffectorBody.call(Startable.java:56)
at
org.apache.brooklyn.core.entity.trait.Startable$StartEffectorBody.call(Startable.java:50)
at
org.apache.brooklyn.core.effector.EffectorTasks$EffectorBodyTaskFactory$1.call(EffectorTasks.java:82)
at
org.apache.brooklyn.util.core.task.DynamicSequentialTask$DstJob.call(DynamicSequentialTask.java:364)
at
org.apache.brooklyn.util.core.task.BasicExecutionManager$SubmissionCallable.call(BasicExecutionManager.java:565)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
"qtp507126053-220337" #220337 prio=5 os_prio=31 tid=0x00007faf306da800
nid=0xbde3 waiting for monitor entry [0x000070000cc9d000]
java.lang.Thread.State: BLOCKED (on object monitor)
at
org.apache.brooklyn.core.entity.AbstractEntity.setApplication(AbstractEntity.java:753)
- waiting to lock <0x0000000797da2ad8> (a com.acme.MyEntityImpl)
at
org.apache.brooklyn.core.entity.AbstractEntity.getApplication(AbstractEntity.java:744)
at
org.apache.brooklyn.core.entity.AbstractEntity.getApplicationId(AbstractEntity.java:763)
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.apache.brooklyn.core.objs.proxy.EntityProxyImpl.invoke(EntityProxyImpl.java:189)
at com.sun.proxy.$Proxy246.getApplicationId(Unknown Source)
at
org.apache.brooklyn.rest.resources.ApplicationResource.fromEntity(ApplicationResource.java:147)
at
org.apache.brooklyn.rest.resources.ApplicationResource.fromEntity(ApplicationResource.java:124)
at
org.apache.brooklyn.rest.resources.ApplicationResource.fetch(ApplicationResource.java:188)
{noformat}
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
