[jboss-jira] [JBoss JIRA] Created: (JBPM-1072) Concurrent JobExecutors can process the same job in parallel

[Jiri Pechanec (JIRA)]

Concurrent JobExecutors can process the same job in parallel
------------------------------------------------------------

                 Key: JBPM-1072
                 URL: http://jira.jboss.com/jira/browse/JBPM-1072
             Project: JBoss jBPM
          Issue Type: Bug
          Components: Core Engine
    Affects Versions: jBPM jPDL 3.2.2
         Environment: Linux 2.6.21-1.3228.fc7 #1 SMP Tue Jun 12 14:56:37 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
MySQL 5.0.22
            Reporter: Jiri Pechanec
         Assigned To: Tom Baeyens
         Attachments: expl.tar.gz

Attached is a simple test case that
1) Deploys process definition with two nodes
2) Starts 20 executor threads
2) Starts the process instance that will asynchronously execute action on the second node
4) The second node writes a record to the database

The test case needs to be executed multiple times to see the incorrect behaviour.
This is an example of run output
Isol 8
Action 1
Success 0
Failure 0
Action 2
Action 2 1
Action 2
Action 2 1
Action 2
Action 2 1
Action 2
Action 2 1
Action 2
Action 2 1
Action 2
Action 2 1
Action 2
Action 2
Action 2 1
Action 2 1
Action 2
Action 2 1

Explanation of the outcome
9 job executors successfully executed the node action (same job) including database operation. All database operations were comitted (9 new records were created)


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