Hi, I want to run jBPM in a 2-way cluster, but I saw that the CommandExecutor loads the messages without locking and processes them.
The problem is, when there is one CommandExecutor on each machine, both could load and process the same message, isn't it? The query named "MessagingSession.findMessages" for selecting the messages is in the hibernate.queries.hbm.xml file, but it loads all messages at once. How can I modify jBPM to do a row lock on only the message currently being processed? It is critical that no message is processed by both CommandExecutors. Would it be enough to place the line in bold into the executeCommand() method of the CommandExecutorThread class: ... message = dbMessageService.receiveNoWait(destination); jbpmContext.getSession().lock(message, LockMode.UPGRADE); ? The second problem would be how to make the CommandExecutor to skip the locked messages. Thanx in advance View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3934270#3934270 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3934270 ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user
