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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Re: [jira] Commented: (OPENJPA-366) InternalException thrown in BrokerImpl.endOperation
Date Sat, 15 Sep 2007 03:23:51 GMT
Hi Albert,

You should be able to delete your own attachments on this issue (I've  
changed jira to allow this).

Thanks,

Craig

On Sep 14, 2007, at 6:24 PM, Albert Lee (JIRA) wrote:

>
>     [ https://issues.apache.org/jira/browse/OPENJPA-366? 
> page=com.atlassian.jira.plugin.system.issuetabpanels:comment- 
> tabpanel#action_12527669 ]
>
> Albert Lee commented on OPENJPA-366:
> ------------------------------------
>
> The hypothesis that the lock() is missing in endOperation() is  
> incorrect. It was not there by design. Can some administrator  
> remove the attached patch in this report.
>
> We'll continue to investigate this issue and appreciate if anyone  
> has any clues or ideas on where the problem is or how to attach the  
> problem.
>
> Thanks
>
>> 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 
>> $2.translate(PersistenceExceptions.java:66)
>>         at org.apache.openjpa.kernel.DelegatingBroker.translate 
>> (DelegatingBroker.java:110)
>>         at org.apache.openjpa.kernel.DelegatingBroker.newObjectId 
>> (DelegatingBroker.java:262)
>>         at org.apache.openjpa.persistence.EntityManagerImpl.find 
>> (EntityManagerImpl.java:347)
>>         at  
>> com.ibm.svt.shoppingcartModule.stationstore.StationStoreSessionBean.g 
>> etListOrders(StationStoreSessionBean.java:603)
>>         at  
>> com.ibm.svt.shoppingcartModule.stationstore.EJSRemoteStatelessStation 
>> StoreSession_5a5c538c.getListOrders(Unknown Source)
>>         at  
>> com.ibm.svt.shoppingcartModule.stationstore._EJSRemoteStatelessStatio 
>> nStoreSession_5a5c538c_Tie.getListOrders 
>> (_EJSRemoteStatelessStationStoreSession_5a5c538c_Tie.java:244)
>>         at  
>> com.ibm.svt.shoppingcartModule.stationstore._EJSRemoteStatelessStatio 
>> nStoreSession_5a5c538c_Tie._invoke 
>> (_EJSRemoteStatelessStationStoreSession_5a5c538c_Tie.java:100)
>>         at com.ibm.CORBA.iiop.ServerDelegate.dispatchInvokeHandler 
>> (ServerDelegate.java:613)
>>         at com.ibm.CORBA.iiop.ServerDelegate.dispatch 
>> (ServerDelegate.java:466)
>>         at com.ibm.rmi.iiop.ORB.process(ORB.java:503)
>>         at com.ibm.CORBA.iiop.ORB.process(ORB.java:1553)
>>         at com.ibm.rmi.iiop.Connection.respondTo(Connection.java: 
>> 2680)
>>         at com.ibm.rmi.iiop.Connection.doWork(Connection.java:2554)
>>         at com.ibm.rmi.iiop.WorkUnitImpl.doWork(WorkUnitImpl.java:62)
>>         at com.ibm.ejs.oa.pool.PooledThread.run(ThreadPool.java:118)
>>         at com.ibm.ws.util.ThreadPool$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.
>
> -- 
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.
>

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!


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