Possible minor optimization. In StatefulTreeCache.start()

cacheNode = new Fqn(new Object[]

{ SFSB, this.ejbContainer.getDeploymentPropertyListString() }

);

......

Node regionRoot = cache.getNode(cacheNode);
if (regionRoot == null)

{ regionRoot = cache.getRoot().addChild(cacheNode); }

regionRoot.setResident(true);

We should follow this with

cacheNode = regionRoot.getFqn();

Result is the base Fqn we use to create session Fqns is made up of the same initial elements as what's in the JBC tree. Result is equals checks on those elements become ==.