Running JGroups with a TCP stack is going to be more reliable than running with a UDP stack.
The JGroups documentation isn't great. You'll have better luck and more current guidance on the JBoss site (http://www.jboss.org/products/jgroups) than on the old jgroups.org site. Also, if you enable the Message.* logging category in services-config.xml at the Error level, I believe you'll get more info in your server logs when this occurs, including the root cause exception thrown by JGroups that triggers the ClusterException. The other way to get more info on the underlying JGroups failure is to enable the internal JGroups tracing/logging. You can add a <TRACE/> element at the bottom of the 'protocol stack' in your jgroups config file (as the last element within the <config> block). This dumps _lots_ of info so do this in a dev or staging environment and don't leave it on - just run long enough to capture logging around one of these exception events. Best, Seth ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of ngpaiva Sent: Wednesday, January 30, 2008 8:19 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] flex.messaging.cluster.ClusterException: Unable to broadcast a replicated svc Throughout the day I see the following message posted on my logs, and can't seem to track the root cause, or how to fix it. We have a 2-node JBoss cluster, but only really using the Flex cache replication piece of the framework. We use UDP protocol and plan to make the change to using TCP instead in the near future. Tried searching on this forum and expanded my research to other sites, but came up empty. Any recommendations on how to proceed? 15:00:49,253 ERROR [STDERR] Exception in thread "pool-2-thread-16" 15:00:49,253 ERROR [STDERR] flex.messaging.cluster.ClusterException: Unable to broadcast a replicated service operation to the service peers for cluster id 'default-cluster'. 15:00:49,254 ERROR [STDERR] at flex.messaging.cluster.JGroupsCluster.broadcastOperation (JGroupsCluster.java:388) 15:00:49,254 ERROR [STDERR] at flex.messaging.cluster.JGroupsCluster.broadcastServiceOperation (JGroupsCluster.java:309) 15:00:49,254 ERROR [STDERR] at flex.messaging.cluster.ClusterManager.invokeServiceOperation (ClusterManager.java:101) 15:00:49,254 ERROR [STDERR] at flex.data.DataService.sendPeerSyncAndPush(DataService.java:253) 15:00:49,254 ERROR [STDERR] at flex.data.DataServiceTransaction.syncClients (DataServiceTransaction.java:1209) 15:00:49,254 ERROR [STDERR] at flex.data.DataServiceTransaction.doCommit (DataServiceTransaction.java:965) 15:00:49,254 ERROR [STDERR] at flex.data.DataServiceTransaction.commit (DataServiceTransaction.java:348) 15:00:49,254 ERROR [STDERR] at com.firstbest.underwriting.audit.AuditLogAssembler.onEvent (AuditLogAssembler.java:107) 15:00:49,254 ERROR [STDERR] at com.firstbest.event.JXPathEventEngine.sendEvent (JXPathEventEngine.java:78) 15:00:49,254 ERROR [STDERR] at com.firstbest.event.EventServiceImpl.dispatchAsyncEvent (EventServiceImpl.java:52) 15:00:49,254 ERROR [STDERR] at com.firstbest.event.async.SimpleEventQueueListener$EventDispatchTask.r un(SimpleEventQueueListener.java:102) 15:00:49,254 ERROR [STDERR] at java.util.concurrent.ThreadPoolExecutor$Worker.runTask (ThreadPoolExecutor.java:650) 15:00:49,254 ERROR [STDERR] at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:675) 15:00:49,254 ERROR [STDERR] at java.lang.Thread.run (Thread.java:595) Thanks in advance for any replies.
