[magnolia-dev] [JIRA] (MGNLWORKFLOW-307) Concurrent modification when persisting processes

[JIRA (on behalf of Espen Jervidalo)]

Title: Message Title

Espen Jervidalo created an issue   Magnolia Workflow Module / MGNLWORKFLOW-307 Concurrent modification when persisting processes Issue Type: Bug Affects Versions: 5.5, 5.4 Assignee: Unassigned Created: 15/Jul/15 5:00 PM Priority: Neutral Reporter: Espen Jervidalo These are assumptions and should be verified: Compared to jBPM's persistency using JPA we do not use transactions for storing processes, instead we eagerly persist the status under certain conditions. org.drools.persistence.SimpleSessionCommandService is where the transactions would be committed or rolled back. Here's where we decide when to persist: org.jbpm.persistence.JcrPersistProcessInterceptor#isValidCommand IMO this is the reason that we sometimes run into ConcurrentModificationExceptions. Here's the stacktrace: 2015-07-15 15:53:54,727 INFO info.magnolia.module.scheduler.CommandJob : Starting job [asyncCommand1436968434726]... 2015-07-15 15:53:54,733 WARN info.magnolia.event.SimpleEventBus : Exception caught when dispatching a class info.magnolia.task.event.TaskEvent event with class info.magnolia.module.workflow.jbpm.humantask.ProcessTaskEventHandler eventHandler. org.jbpm.workflow.instance.WorkflowRuntimeException: [info.magnolia.workflow.ReviewForPublication:1,436,967,381,809 - Publication:4] -- null at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:177) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:364) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:379) at org.jbpm.workflow.instance.node.SplitInstance.executeStrategy(SplitInstance.java:117) at org.jbpm.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:63) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:171) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerNodeInstance(NodeInstanceImpl.java:364) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:323) at org.jbpm.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:44) at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:341) at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:318) at org.jbpm.workflow.instance.node.WorkItemNodeInstance.triggerCompleted(WorkItemNodeInstance.java:316) at org.jbpm.workflow.instance.node.HumanTaskNodeInstance.triggerCompleted(HumanTaskNodeInstance.java:93) at org.jbpm.workflow.instance.node.WorkItemNodeInstance.workItemCompleted(WorkItemNodeInstance.java:378) at org.jbpm.workflow.instance.node.WorkItemNodeInstance.signalEvent(WorkItemNodeInstance.java:354) at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:434) at org.drools.persistence.jcr.processinstance.JcrWorkItemManager.completeWorkItem(JcrWorkItemManager.java:168) at org.drools.core.command.runtime.process.CompleteWorkItemCommand.execute(CompleteWorkItemCommand.java:75) .... used by: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922) at java.util.HashMap$EntryIterator.next(HashMap.java:962) at java.util.HashMap$EntryIterator.next(HashMap.java:960) at java.util.HashMap.writeObject(HashMap.java:1127) at sun.reflect.GeneratedMethodAccessor660.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at java.util.ArrayList.writeObject(ArrayList.java:742) at sun.reflect.GeneratedMethodAccessor675.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at java.util.HashMap.writeObject(HashMap.java:1129) at sun.reflect.GeneratedMethodAccessor660.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at java.util.ArrayList.writeObject(ArrayList.java:742) at sun.reflect.GeneratedMethodAccessor675.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988) at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495) at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431) at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177) at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347) at org.drools.core.marshalling.impl.SerializablePlaceholderResolverStrategy$SerializablePlaceholderStrategyContext.write(SerializablePlaceholderResolverStrategy.java:97) at org.drools.core.marshalling.impl.PersisterHelper.writeStrategiesIndex(PersisterHelper.java:218) at org.drools.core.marshalling.impl.PersisterHelper.writeToStreamWithHeader(PersisterHelper.java:198) at org.jbpm.persistence.processinstance.ProcessInstanceInfo.transform(ProcessInstanceInfo.java:221) at org.jbpm.persistence.JcrPersistProcessInterceptor$PersistProcessCommand.execute(JcrPersistProcessInterceptor.java:109) at org.jbpm.persistence.JcrPersistProcessInterceptor$PersistProcessCommand.execute(JcrPersistProcessInterceptor.java:88) at org.drools.core.command.impl.DefaultCommandService.execute(DefaultCommandService.java:36) at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) at org.drools.persistence.SimpleSessionCommandService$TransactionInterceptor.execute(SimpleSessionCommandService.java:334) at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) at org.drools.persistence.jcr.JcrPersistInterceptor.execute(JcrPersistInterceptor.java:42) at org.drools.core.command.impl.AbstractInterceptor.executeNext(AbstractInterceptor.java:41) at org.jbpm.persistence.JcrPersistProcessInterceptor.execute(JcrPersistProcessInterceptor.java:63) at org.drools.persistence.SimpleSessionCommandService.execute(SimpleSessionCommandService.java:251) at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.startProcessInstance(CommandBasedStatefulKnowledgeSession.java:256) at org.jbpm.workflow.instance.node.SubProcessNodeInstance.internalTrigger(SubProcessNodeInstance.java:188) at org.jbpm.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:171) ... 162 more Add Comment   This message was sent by Atlassian JIRA (v6.4.7#64022-sha1:4cb2968) ---------------------------------------------------------------- For list details, see: http://www.magnolia-cms.com/community/mailing-lists.html Alternatively, use our forums: http://forum.magnolia-cms.com/ To unsubscribe, E-mail to: <dev-list-unsubscr...@magnolia-cms.com> ----------------------------------------------------------------