[jboss-dev-forums] [Design of Clustering on JBoss] - Re: HA election policy

[bstansberry@jboss.com]

"mohitanchlia" wrote : Thanks I already looked at it. How is Barrier able to start or stop EJBs, MDBs that are not mbean and don't follow service life cycle i.e start/stop/create etc.

In JBoss 4.x?  Everthing ends up as an mbean.  You add a a "depends" element to the relevant deployment descriptor (jboss-app.xml if an ear, jboss.xml for for EJB/MDB).

anonymous wrote : Also, what happens if Election policy like pickSingleton has a bug and chooses 2 nodes as Master at the same time?

Then whatever depends on the barrier ends up being started on 2 nodes at the same time.

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