Aled Sage created BROOKLYN-284:
----------------------------------
Summary: Deadlock in entity creation, when toString() calls
getConfig
Key: BROOKLYN-284
URL: https://issues.apache.org/jira/browse/BROOKLYN-284
Project: Brooklyn
Issue Type: Bug
Affects Versions: 0.9.0
Reporter: Aled Sage
If an entity's toString calls getConfig() to retrieve a config value that is
set on the entity, it deadlocks during the initial creation of the entity.
{noformat}
Java stack information for the threads listed above:
===================================================
"brooklyn-execmanager-o0dJOc0a-1":
at
org.apache.brooklyn.core.mgmt.internal.EntityManagementSupport.getExecutionContext(EntityManagementSupport.java:354)
- waiting to lock <0x00000007fa6ff568> (a
org.apache.brooklyn.core.mgmt.internal.EntityManagementSupport)
at
org.apache.brooklyn.core.entity.AbstractEntity.getExecutionContext(AbstractEntity.java:1566)
- locked <0x00000007fa6fef90> (a
org.apache.brooklyn.core.entity.EntityTypeTest$EntityWithToStringAccessingConfig)
at
org.apache.brooklyn.core.objs.AdjunctConfigMap.getConfig(AdjunctConfigMap.java:84)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.getConfig(AbstractConfigMapImpl.java:50)
at
org.apache.brooklyn.core.objs.AbstractEntityAdjunct$BasicConfigurationSupport.get(AbstractEntityAdjunct.java:291)
at
org.apache.brooklyn.enricher.stock.Transformer.getTransformation(Transformer.java:65)
at
org.apache.brooklyn.enricher.stock.AbstractTransformer.compute(AbstractTransformer.java:139)
at
org.apache.brooklyn.enricher.stock.AbstractTransformer.onEvent(AbstractTransformer.java:133)
at
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager$1.run(LocalSubscriptionManager.java:149)
at
org.apache.brooklyn.util.concurrent.CallableFromRunnable.call(CallableFromRunnable.java:43)
at
org.apache.brooklyn.util.core.task.BasicExecutionManager$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)
"main":
at
org.apache.brooklyn.core.entity.AbstractEntity.getExecutionContext(AbstractEntity.java:1566)
- waiting to lock <0x00000007fa6fef90> (a
org.apache.brooklyn.core.entity.EntityTypeTest$EntityWithToStringAccessingConfig)
at
org.apache.brooklyn.core.entity.internal.EntityConfigMap.getConfig(EntityConfigMap.java:117)
at
org.apache.brooklyn.core.config.internal.AbstractConfigMapImpl.getConfig(AbstractConfigMapImpl.java:50)
at
org.apache.brooklyn.core.entity.AbstractEntity$BasicConfigurationSupport.get(AbstractEntity.java:1180)
at
org.apache.brooklyn.core.entity.AbstractEntity.getConfig(AbstractEntity.java:1266)
at
org.apache.brooklyn.core.entity.EntityTypeTest$EntityWithToStringAccessingConfig.toString(EntityTypeTest.java:300)
at
org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:304)
at
org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:276)
at
org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:230)
at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:114)
at
ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:447)
at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:403)
at ch.qos.logback.classic.Logger.debug(Logger.java:522)
at
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager.subscribe(LocalSubscriptionManager.java:114)
- locked <0x00000007f955e438> (a
org.apache.brooklyn.core.mgmt.internal.LocalSubscriptionManager)
at
org.apache.brooklyn.core.mgmt.internal.QueueingSubscriptionManager.startDelegatingForSubscribing(QueueingSubscriptionManager.java:81)
- locked <0x00000007fa6ff618> (a
org.apache.brooklyn.core.mgmt.internal.QueueingSubscriptionManager)
at
org.apache.brooklyn.core.mgmt.internal.EntityManagementSupport.onManagementStarting(EntityManagementSupport.java:186)
- locked <0x00000007fa6ff568> (a
org.apache.brooklyn.core.mgmt.internal.EntityManagementSupport)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager$2.apply(LocalEntityManager.java:360)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager$2.apply(LocalEntityManager.java:1)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager.recursively(LocalEntityManager.java:586)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager.manageRecursive(LocalEntityManager.java:381)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager.manage(LocalEntityManager.java:275)
at
org.apache.brooklyn.core.mgmt.internal.LocalEntityManager.createEntity(LocalEntityManager.java:149)
at
org.apache.brooklyn.core.entity.AbstractEntity.addChild(AbstractEntity.java:693)
at
org.apache.brooklyn.core.test.entity.TestApplicationImpl.createAndManageChild(TestApplicationImpl.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.brooklyn.core.objs.proxy.EntityProxyImpl.invoke(EntityProxyImpl.java:213)
at com.sun.proxy.$Proxy12.createAndManageChild(Unknown Source)
at
org.apache.brooklyn.core.entity.EntityTypeTest.testEntityDynamicTypeDoesNotCallToStringDuringConstruction(EntityTypeTest.java:272)
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.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
at
org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:343)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:305)
at org.testng.SuiteRunner.run(SuiteRunner.java:254)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
at org.testng.TestNG.run(TestNG.java:1057)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:115)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:207)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:178)
Found 1 deadlock.
{noformat}
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