[jboss-jira] [JBoss JIRA] Commented: (JBPM-983) concurrent process execution fails

Wed Sep 5 09:56:13 EDT 2007

    [ http://jira.jboss.com/jira/browse/JBPM-983?page=comments#action_12375366 ] 

Tom Baeyens commented on JBPM-983:
----------------------------------

about the exclusive feature.  the idea is that the correctness of a process should depend on locking (optimistic by default or pessimistic programmaticaly).  the exclusive is just an indication to the engine that the exclusive jobs will probably cause interference and result in stale object exceptions that will have to be rolled back.  so the exclusive is just an optimisation that can be used to get less optimistic locking failures.

> concurrent process execution fails
> ----------------------------------
>
>                 Key: JBPM-983
>                 URL: http://jira.jboss.com/jira/browse/JBPM-983
>             Project: JBoss jBPM
>          Issue Type: Bug
>          Components: Core Engine
>    Affects Versions: jBPM jPDL 3.2
>         Environment: Hypersonic in-memory database, JobExecutor configured with 5 threads
>            Reporter: Alexander Schlett
>         Assigned To: Tom Baeyens
>            Priority: Critical
>             Fix For: jBPM jPDL 3.2.2
>
>         Attachments: SimpleTest.java, SimpleTest.java, SimpleTest.java, SimpleTest.java, SimpleTest.java
>
>
> concurrent execution of async nodes with multiple JobExecutor threads fails. the effect is:
> 1) job sync within JobExecutor fails due to org.hibernate.StaleObjectStateException
> 2) process gets stuck in join node and never ends
> junit test for this is attached, it's a simple process with just a fork and a join and some scripts inbetween.

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira