[jboss-user] [jBPM] - Re: Problem in a process with a event-based timer and JPAWorkingMemoryDbLogger

[Ryan Peterson]

Ryan Peterson [http://community.jboss.org/people/rrpeterson] created the discussion

"Re: Problem in a process with a event-based timer and JPAWorkingMemoryDbLogger"

To view the discussion, visit: http://community.jboss.org/message/627274#627274

--------------------------------------------------------------
I'm getting this same exception.  I create 5 instances of a process.  Mid-point in the process I have a timer, and things are run/persisted properly until the timer is reached.  At this point control is returned to the caller, which waits for some time until re-aquiring the session instances (via JPAKnowledgeService.loadStatefulKnowledgeSession(w, x, y, z)) and fireUntilHalt() is called on the ksession.  At this point, an intermittent # of my remaining process instances will execute properly (maybe 2 out of 5), and the remaining fail with the following exception:

Hibernate: select processins0_.InstanceId as InstanceId121_0_, processins0_.lastModificationDate as lastModi2_121_0_, processins0_.lastReadDate as lastRead3_121_0_, processins0_.processId as processId121_0_, processins0_.processInstanceByteArray as processI5_121_0_, processins0_.startDate as startDate121_0_, processins0_.state as state121_0_, processins0_.OPTLOCK as OPTLOCK121_0_ from ProcessInstanceInfo processins0_ where processins0_.InstanceId=?
org.drools.RuntimeDroolsException: Unexpected exception executing action org.jbpm.process.instance.event.DefaultSignalManager$SignalProcessInstanceAction at 3f1dae99
 at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:996)
 at org.drools.impl.StatefulKnowledgeSessionImpl.executeQueuedActions(StatefulKnowledgeSessionImpl.java:845)
 at org.jbpm.process.instance.event.DefaultSignalManager.signalEvent(DefaultSignalManager.java:89)
 at org.jbpm.process.instance.timer.TimerManager$ProcessJob.execute(TimerManager.java:164)
 at org.drools.time.impl.JDKTimerService$JDKCallableJob.call(JDKTimerService.java:151)
 at org.drools.persistence.jpa.JpaJDKTimerService$JpaJDKCallableJob.internalCall(JpaJDKTimerService.java:80)
 at org.drools.persistence.jpa.JpaJDKTimerService$JpaJDKCallableJob.access$100(JpaJDKTimerService.java:63)
 at org.drools.persistence.jpa.JpaJDKTimerService$JDKCallableJobCommand.execute(JpaJDKTimerService.java:96)
 at org.drools.persistence.jpa.JpaJDKTimerService$JDKCallableJobCommand.execute(JpaJDKTimerService.java:84)
 at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:292)
 at org.drools.persistence.jpa.JpaJDKTimerService$JpaJDKCallableJob.call(JpaJDKTimerService.java:75)
 at org.drools.persistence.jpa.JpaJDKTimerService$JpaJDKCallableJob.call(JpaJDKTimerService.java:63)
 at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
 at java.util.concurrent.FutureTask.run(FutureTask.java:138)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
 at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.NullPointerException
 at org.jbpm.process.audit.JPAWorkingMemoryDbLogger.getEntityManager(JPAWorkingMemoryDbLogger.java:131)
 at org.jbpm.process.audit.JPAWorkingMemoryDbLogger.addNodeExitLog(JPAWorkingMemoryDbLogger.java:118)
 at org.jbpm.process.audit.JPAWorkingMemoryDbLogger.logEventCreated(JPAWorkingMemoryDbLogger.java:80)
 at org.drools.audit.WorkingMemoryLogger.filterLogEvent(WorkingMemoryLogger.java:196)
 at org.drools.audit.WorkingMemoryLogger.beforeNodeLeft(WorkingMemoryLogger.java:506)
 at org.drools.event.ProcessEventSupport.fireBeforeNodeLeft(ProcessEventSupport.java:112)
 at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:162)
 at org.jbpm.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:150)
 at org.jbpm.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:47)
 at org.jbpm.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:162)
 at org.jbpm.workflow.instance.node.TimerNodeInstance.triggerCompleted(TimerNodeInstance.java:135)
 at org.jbpm.workflow.instance.node.TimerNodeInstance.signalEvent(TimerNodeInstance.java:125)
 at org.jbpm.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:333)
 at org.jbpm.process.instance.event.DefaultSignalManager$SignalProcessInstanceAction.execute(DefaultSignalManager.java:117)
 at org.drools.common.AbstractWorkingMemory.executeQueuedActions(AbstractWorkingMemory.java:994)
 ... 18 more
--------------------------------------------------------------

Reply to this message by going to Community
[http://community.jboss.org/message/627274#627274]

Start a new discussion in jBPM at Community
[http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/jboss-user/attachments/20110919/b4c7f277/attachment.html