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From "Kevin Sutter (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (OPENJPA-366) InternalException thrown in BrokerImpl.endOperation
Date Fri, 14 Sep 2007 18:32:32 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-366?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kevin Sutter reassigned OPENJPA-366:
------------------------------------

    Assignee: Albert Lee

> InternalException thrown in BrokerImpl.endOperation
> ---------------------------------------------------
>
>                 Key: OPENJPA-366
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-366
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.0.0
>         Environment: All platforms
>            Reporter: Albert Lee
>            Assignee: Albert Lee
>         Attachments: OPENJPA-366.patch
>
>
> Under heavy load during stress test, the following exception is observed:
> <openjpa-1.0.0-SNAPSHOT-r420667:570288M fatal general error> org.apache.openjpa.persistence.PersistenceException:
null
>         at org.apache.openjpa.kernel.BrokerImpl.endOperation(BrokerImpl.java:1728)
>         at org.apache.openjpa.kernel.BrokerImpl.isActive(BrokerImpl.java:1676)
>         at org.apache.openjpa.kernel.DelegatingBroker.isActive(DelegatingBroker.java:420)
>         at org.apache.openjpa.persistence.EntityManagerImpl.isActive(EntityManagerImpl.java:502)
>         at org.apache.openjpa.persistence.PersistenceExceptions$2.translate(PersistenceExceptions.java:66)
>         at org.apache.openjpa.kernel.DelegatingBroker.translate(DelegatingBroker.java:110)
>         at org.apache.openjpa.kernel.DelegatingBroker.newObjectId(DelegatingBroker.java:262)
>         at org.apache.openjpa.persistence.EntityManagerImpl.find(EntityManagerImpl.java:347)
>         at com.ibm.svt.shoppingcartModule.stationstore.StationStoreSessionBean.getListOrders(StationStoreSessionBean.java:603)
>         at com.ibm.svt.shoppingcartModule.stationstore.EJSRemoteStatelessStationStoreSession_5a5c538c.getListOrders(Unknown
Source)
>         at com.ibm.svt.shoppingcartModule.stationstore._EJSRemoteStatelessStationStoreSession_5a5c538c_Tie.getListOrders(_EJSRemoteStatelessStationStoreSession_5a5c538c_Tie.java:244)
>         at com.ibm.svt.shoppingcartModule.stationstore._EJSRemoteStatelessStationStoreSession_5a5c538c_Tie._invoke(_EJSRemoteStatelessStationStoreSession_5a5c538c_Tie.java:100)
>         at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler(ServerDelegate.java:613)
>         at com.ibm.CORBA.iiop.ServerDelegate.dispatch(ServerDelegate.java:466)
>         at com.ibm.rmi.iiop.ORB.process(ORB.java:503)
>         at com.ibm.CORBA.iiop.ORB.process(ORB.java:1553)
>         at com.ibm.rmi.iiop.Connection.respondTo(Connection.java:2680)
>         at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2554)
>         at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:62)
>         at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
>         at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1469)
> [8/31/07 22:45:26:265 EDT] 000000c1 SystemOut     O   MDD Translating exception: <openjpa-0.0.0-r420667:570288
fatal internal error> org.apache.openjpa.util.InternalException: null
> [8/31/07 22:45:26:265 EDT] 000000c1 SystemErr     R   <openjpa-0.0.0-r420667:570288
fatal internal error> org.apache.openjpa.util.InternalException: null
> [8/31/07 22:45:26:265 EDT] 000000c1 SystemErr     R   	at org.apache.openjpa.kernel.BrokerImpl.endOperation(BrokerImpl.java:1728)
> After some investigation, it was determined that the internal exception is caused by
>              if (_operationCount < 1)
>                 throw new InternalException();
> in BrokerImpl.endOperation();
> We believe the cause of the problem is a lock() method call is missing in the endOperation()
>     public boolean endOperation() {
>         lock();   <<<<<  This is the missing lock() call since BrokerImpl.java
was created
>         try {
>             if (_operationCount == 1 && (_autoDetach & DETACH_NONTXREAD)
!= 0
>                 && (_flags & FLAG_ACTIVE) == 0) {
>                 detachAllInternal(null);
>             }
>             if (_operationCount < 1)
>                 throw new InternalException();
>             return _operationCount == 1;
>         } catch (OpenJPAException ke) {
>             throw ke;
>         } catch (RuntimeException re) {
>             throw new GeneralException(re);
>         } finally {
>             _operationCount--;
>             if (_operationCount == 0)
>                 _operating.clear();
>             unlock();
>         }
>     }
> Once we have done more tests and verify the fix, I'll submit a patch for this problem.
> If anyone doesn't think this is the solution. please response.
> Albert Lee.

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