what you mean by that?
with jbpm 6 you can deploy your business archives (with processes, rules, etc) while server is running. so it's completely based on hot deployment.
How to modify and upgrade an existed process without changing the process id ?
Of cource you can not restarting the server.
The process id was registed by the 3d party, so I can not change it frequently.
I know the problem existing process instances might still need that process definition. I hope providing some strategies to achieve hot deployment rather than to deploy a new process.
That's the problem I encounted.