[jboss-jira] [JBoss JIRA] Commented: (JBPM-974) concurrent job acquirement fails

Fri Jun 1 09:31:15 EDT 2007

    [ http://jira.jboss.com/jira/browse/JBPM-974?page=comments#action_12363872 ] 

Tom Baeyens commented on JBPM-974:
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the forum thread doesn't give my much to go on.  the stack trace is a 'normal' situation in a clustered environment.  the idea is that the first transaction that commits wins and the other one is rolled back.  so the job should remain in the queue and get picked up for execution again by the same thread for a next try.

please reopen if you have more concrete problem report.  the job executor is tested witih 5 concurrent threads (but they are running on the same machine), which should not be a problem.

> concurrent job acquirement fails
> --------------------------------
>
>                 Key: JBPM-974
>                 URL: http://jira.jboss.com/jira/browse/JBPM-974
>             Project: JBoss jBPM
>          Issue Type: Bug
>          Components: Core Engine
>    Affects Versions: jBPM jPDL 3.2
>            Reporter: Alexander Schlett
>         Assigned To: Tom Baeyens
>
> when more than 1 job executor thread is configured and concurrent async nodes are to be executed, it results in hibernate exceptions.
> reason: job acquirement is not synchronized well, resulting in multiple threads trying to work on the same job.

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