Hi all, I'm trying to invoke multiple instances on two ODE engines.
I deployed the two engines in two tomcat servers of different ports in the same
computer. Then invoked 15 same process instances on each ODE engine, and the
two process definitions for the two engines are not the same. When I invoked
them all, the first engine went well, but the instances on the second engine
sometimes worked well, sometimes it threw exception like below:
16:28:01,939 WARN [Transaction] Unexpected exception from beforeCompletion;
transaction will roll back
<openjpa-1.2.1-r752877:753278 nonfatal user error>
org.apache.openjpa.persistence.InvalidStateException: Attempt to commit a null
javax.transaction.Transaction. Some application servers set the transaction to
null if a rollback occurs.
at
org.apache.openjpa.kernel.BrokerImpl.setRollbackOnlyInternal(BrokerImpl.java:1490)
at
org.apache.openjpa.kernel.BrokerImpl.setRollbackOnly(BrokerImpl.java:1476)
at
org.apache.openjpa.kernel.DelegatingBroker.setRollbackOnly(DelegatingBroker.java:925)
at
org.apache.openjpa.persistence.EntityManagerImpl.setRollbackOnly(EntityManagerImpl.java:560)
at
org.apache.openjpa.persistence.PersistenceExceptions$2.translate(PersistenceExceptions.java:71)
at
org.apache.openjpa.kernel.BrokerImpl.translateManagedCompletionException(BrokerImpl.java:1896)
at
org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:1830)
at
org.apache.geronimo.transaction.manager.TransactionImpl.beforeCompletion(TransactionImpl.java:514)
at
org.apache.geronimo.transaction.manager.TransactionImpl.beforeCompletion(TransactionImpl.java:498)
at
org.apache.geronimo.transaction.manager.TransactionImpl.beforePrepare(TransactionImpl.java:400)
at
org.apache.geronimo.transaction.manager.TransactionImpl.commit(TransactionImpl.java:257)
at
org.apache.geronimo.transaction.manager.TransactionManagerImpl.commit(TransactionManagerImpl.java:238)
at
org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:291)
at
org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:239)
at
org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:512)
at
org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:496)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
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)
BTW after the error the instances can still go on to the normal end. Maybe the
rollback saved the instance.
It seems that something went wrong with the transaction manager. Could you help
me figure out how this error came out?
Best,
Vito
