"smarlow(a)redhat.com" wrote : What I mean, is should SessionBasedClusteredSession.writeExternal + SessionBasedClusteredSession.readExternal instead synchronize on getSession(), which should be the same StandardSessionFacade as RichFaces is synchronizing on. | | I haven't recreated the bug yet. I could either recreate it or you could try the following SessionBasedClusteredSession change (two line change to synchronize on common session facade) : | | public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException | | { | | synchronized (getSession()) // change 1 of 2 | | { | | // Let superclass read in everything but the attribute map | | super.readExternal(in); | | | | attributes = (Map) in.readObject(); | | } | | } | | | | public void writeExternal(ObjectOutput out) throws IOException | | { | | synchronized (getSession) // change 2 of 2 | | { | | // Let superclass write out everything but the attribute map | | super.writeExternal(out); | | | | // Don't replicate any excluded attributes | | Map excluded = removeExcludedAttributes(attributes); | | | | out.writeObject(attributes); | | | | // Restore any excluded attributes | | if (excluded != null) | | attributes.putAll(excluded); | | } | | | | } | | | Yes, if synchronization will occur on StandardSessionFacade visible to the application/framework developers, than it should work ok. I haven't built JBoss AS before, so not sure whether I'll be able to make these changes and test; in any case, I'll try that and report. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4239820#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...