[jboss-user] [jBPM] - jBpm4.4 +spring test error(Could not synchronize database state with session)?

[Michael Wohlfart]

Michael Wohlfart [http://community.jboss.org/people/mwohlf] replied to the discussion

"jBpm4.4 +spring test error(Could not synchronize database state with session)?"

To view the discussion, visit: http://community.jboss.org/message/555471#555471

--------------------------------------------------------------
I have a similar issue and I think there is a race condition between the DispatcherThread that handles the execution of async Messages/Jobs and the main-Thread. Both alter data in the JBPM4_JOB table, I think this is what is going on:

1. main-Thread is running along, minding his own business and creates a hibernate-Session
2. DispatcherThread wakes up and also creates a hibernate-Session accessing data in the JBPM4_JOB table
3. DispatcherThread did its work and removes the Job data from the JBPM4_JOB table
4. main-Thread ends an execution and deletes the execution related data from the JBPM4_JOB table,
since the same data have been altered by different session there is an exception at this point

--------------------------------------------------------------

Reply to this message by going to Community
[http://community.jboss.org/message/555471#555471]

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/20100802/a675426d/attachment.html