OK, ported code.  I used the installer to throw 4.0.4RC1:ejb-cluster on two 
machines.

Q:  Does this server config support HA-JMS?  I had assumed HA-Singleton was 
necessary for the deployment, but I don't see anything in ejb-cluster that 
would appear to support it.

I suppose I should specify what I'm going after here:

I have a cluster of nodes, each with a pool of MDBs.  Each MDB is pointed to a 
queue.  I need HA on the queue, such that if I lose any node, the queue is 
still available, and I don't lose data.  From what I understand, a JBoss 
cluster will elect a single node to be the "Master", upon which it will start 
up a JMS server available via HA-JNDI.  The MDB on each node will attach to 
that central queue, and all is fine.  Rip out the Master node, and each 
remaining node will elect a new one to take its place.  After this, each MDB 
will query HA-JNDI for a new queue, and off the system goes again.  Of course, 
central to this is establishing a central datasource for JMS so that the new 
JMS instance can pick up where the old one left off.

Can this be done with 4.0.4, and if so, what profile do I need to achieve this? 
 Do I need to download the zipped version and patch it with EJB3RC5?

I've been dealing with this issue for several days, and have even coded a work 
around using a thread-pool and database for simple load balancing.  The MDB 
approach is much more desirable...

-jjk


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