topic Parallel Gateway: Two Instances of UserTask are created mistakenly in Alfresco Archive

Parallel Gateway: Two Instances of UserTask are created mistakenly

wl21st — Wed, 24 Jun 2015 09:37:09 GMT

Hi All,Attached the process definition. I am working on a process POC which uses a parallel gateway/exclusive gateway, inclusive gateway, service tasks/user tasks and timerevent. Strangely enough the two same user task(user task1) are created. From debug, it seems that the Timer1 event has lockin

Re: Parallel Gateway: Two Instances of UserTask are created mistakenly

trademak — Wed, 24 Jun 2015 20:09:03 GMT

Hi Michael,

1. Don't think so, it just means that no JTA is used in Activiti
2. I don't think so, but you could give it a try of course.

Would it be possible to create a unit test showing the issue? That would make it a lot easier to reproduce the issue for us.

Best regards,

Re: Parallel Gateway: Two Instances of UserTask are created mistakenly

wl21st — Thu, 25 Jun 2015 08:47:19 GMT

Thanks Tijs for your quick reply. Will follow up on this and update accordingly.

Sincerely yours,
Michael Luo

Re: Parallel Gateway: Two Instances of UserTask are created mistakenly

wl21st — Fri, 24 Jul 2015 07:11:01 GMT

Actually the root cause of the issue is
1. I am using StandaloneProcessEngineConfiguration(not JtaProcessEngineConfiguration). Can this be related to the retry of jobs?
After I switched to the Jta and TransactionManager, the issue is resolved.

Re: Parallel Gateway: Two Instances of UserTask are created mistakenly

jbarrez — Tue, 28 Jul 2015 12:08:21 GMT

Ah yes. Good catch. The way transactions are treated is completely different in those two.