[jboss-user] [jBPM] - Re: jBPM5 - Using as a state machine in clustered spring application with a dashboard

[Arkady Perepelyuk]

Arkady Perepelyuk [http://community.jboss.org/people/arkper] created the discussion

"Re: jBPM5 - Using as a state machine in clustered spring application with a dashboard"

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I think there might be a problem with trying to share the same Knowledge Session across the cluster. I tried doing so and observed the following issue. A node tries to commit a transaction and finds out that entity SessionInfo has been updated by another transaction. The exception looks as follows:



Hibernate: update SessionInfo set lastModificationDate=?, rulesByteArray=?, startDate=?, OPTLOCK=? where id=? and OPTLOCK=?
Sep 7, 2011 10:39:34 PM org.drools.persistence.jta.JtaTransactionManager commit
WARNING: Unable to commit transaction
javax.persistence.OptimisticLockException


: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [org.drools.persistence.info.SessionInfo#1]





It should be noted that it's just a warning, but I'm not sure if the necessary updates are re-attempted in order to persist the state accuratly.
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