[jboss-user] [jBPM] - Process instance migration problem

Sergey Telezhnikov do-not-reply at jboss.com
Thu Apr 29 09:30:05 EDT 2010

Sergey Telezhnikov [http://community.jboss.org/people/fragmenthandler] created the discussion

"Process instance migration problem"

To view the discussion, visit: http://community.jboss.org/message/540145#540145

My problem is that the migration sometimes doesn’t work. And I cannot understand why.
It would be good if someone could help me.

I deploy two process definitions that are very simple. Both have only sequential activities:
* First process definition: S-> A-> X-> E
* Second process definition: S-> A-> X-> B> E.
Where S is start activity, A, B and E are java activity and X is state activity.

First use case that works: I deploy two definitions. Then I instantiate and start the first definition. In this case migration works and it migrates in activity X of the second process definition and activity B is executed.

Second use case that doesn’t work: I deploy only the first process definition and then immediately run it. In this case execution waits for signal in activity X. Then I deploy second process definition, migrate instance to new second definition and signal the execution. But it will continue execution of the first definition, although running instance has a process definition Id set to the second definition.

I don’t understand what can be wrong. Can someone explain me how exactly does Deployment works and why it is different, when I deploy two process definitions immediately and start the first or sequentially and start in between the first. I use DefaultMigrationHandler from jBPM 4.2.
Sorry for my bad English.


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