SlidingTimeWindow.java:325 NullPointException when retracing an event

[Vytautas Gimbutas]

Hello,

when i try to retract an event from persisted stateful knowledge session I get an exception below. Any ideas what this might be?

2014-11-30 02:11:32,053 WARN  [org.drools.persistence.jta.JtaTransactionManager] (default task-13) Unable to commit transaction: javax.transaction.RollbackException: ARJUNA016053: Could not commit transaction.

at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1178) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:126) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:75) [narayana-jts-integration-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at org.jboss.tm.usertx.client.ServerVMClientUserTransaction.commit(ServerVMClientUserTransaction.java:173) [jboss-transaction-spi-7.1.0.Final.jar:7.1.0.Final]

at org.drools.persistence.jta.JtaTransactionManager.commit(JtaTransactionManager.java:209) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:512) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:353) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.command.impl.CommandBasedEntryPoint.delete(CommandBasedEntryPoint.java:45) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.command.impl.CommandBasedEntryPoint.retract(CommandBasedEntryPoint.java:40) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at lt.mokejimai.ss.engine.KnowledgeSessionManager.retractFromStatefulKnowledgeSession(KnowledgeSessionManager.java:83) [classes:]

at lt.mokejimai.ss.resources.ResourceManager.createTransaction(ResourceManager.java:92) [classes:]

at lt.mokejimai.ss.api.rest.endpoint.TransactionEndpoint.createTransaction(TransactionEndpoint.java:66) [classes:]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_65]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_65]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_65]

at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_65]

at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:137) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:296) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:250) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:237) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:356) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56) [resteasy-jaxrs-3.0.8.Final.jar:]

at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51) [resteasy-jaxrs-3.0.8.Final.jar:]

at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [jboss-servlet-api_3.1_spec-1.0.0.Final.jar:1.0.0.Final]

at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146) [undertow-servlet-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.server.Connectors.executeRootHandler(Connectors.java:177) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:727) [undertow-core-1.0.15.Final.jar:1.0.15.Final]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_65]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_65]

at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_65]

Caused by: javax.persistence.PersistenceException: error during managed flush

at org.hibernate.jpa.spi.AbstractEntityManagerImpl$CallbackExceptionMapperImpl.mapManagedFlushFailure(AbstractEntityManagerImpl.java:1887) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:115) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.engine.transaction.synchronization.internal.RegisteredSynchronization.beforeCompletion(RegisteredSynchronization.java:50) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:76) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:358) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:91) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:162) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1166) [narayana-jts-jacorb-5.0.0.Final.jar:5.0.0.Final (revision: 9aa71)]

... 51 more

Caused by: java.lang.NullPointerException

at org.drools.core.rule.SlidingTimeWindow$BehaviorJobContextTimerOutputMarshaller.serialize(SlidingTimeWindow.java:325) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.marshalling.impl.ProtobufOutputMarshaller.writeTimers(ProtobufOutputMarshaller.java:873) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.marshalling.impl.ProtobufOutputMarshaller.serializeSession(ProtobufOutputMarshaller.java:211) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.marshalling.impl.ProtobufOutputMarshaller.writeSession(ProtobufOutputMarshaller.java:117) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.marshalling.impl.ProtobufMarshaller.marshall(ProtobufMarshaller.java:157) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.core.marshalling.impl.ProtobufMarshaller.marshall(ProtobufMarshaller.java:142) [drools-core-6.1.0.Final.jar:6.1.0.Final]

at org.drools.persistence.SessionMarshallingHelper.getSnapshot(SessionMarshallingHelper.java:64) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

at org.drools.persistence.info.SessionInfo.update(SessionInfo.java:85) [drools-persistence-jpa-6.1.0.Final.jar:6.1.0.Final]

at sun.reflect.GeneratedMethodAccessor27.invoke(Unknown Source) [:1.7.0_65]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_65]

at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_65]

at org.hibernate.jpa.event.internal.jpa.EntityCallback.performCallback(EntityCallback.java:47) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.jpa.event.internal.jpa.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:112) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.jpa.event.internal.jpa.CallbackRegistryImpl.preUpdate(CallbackRegistryImpl.java:76) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.jpa.event.internal.core.JpaFlushEntityEventListener.invokeInterceptor(JpaFlushEntityEventListener.java:67) [hibernate-entitymanager-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.DefaultFlushEntityEventListener.handleInterception(DefaultFlushEntityEventListener.java:342) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.DefaultFlushEntityEventListener.scheduleUpdate(DefaultFlushEntityEventListener.java:293) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:160) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:231) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:102) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:55) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1222) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

at org.hibernate.engine.transaction.synchronization.internal.SynchronizationCallbackCoordinatorNonTrackingImpl.beforeCompletion(SynchronizationCallbackCoordinatorNonTrackingImpl.java:110) [hibernate-core-4.3.5.Final.jar:4.3.5.Final]

... 57 more

[Davide Sottara]

Does it happen only with persisted sessions? A few bugs related to the cancellation of timer jobs were fixed recently
Davide

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[Davide Sottara]

Unless fixed in later versions, a reproducer would be appreciated

Thanks

[Vytautas Gimbutas]

In what version recently it was fixed? I'm using 6.1.

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[Mario Fusco]

Hi,

this problem has been reported here https://issues.jboss.org/browse/DROOLS-576 and fixed with this commit https://github.com/droolsjbpm/drools/commit/3b42da02cf6ab4d3bedb40b637ab6df494f13e64 in version 6.2.0.CR2.

If you give this a try please let me know if it works for you.

Thanks,

Mario

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