[jboss-user] [JBoss Messaging] - Cluster messaging distribution

rana24 do-not-reply at jboss.com
Mon Dec 29 05:25:56 EST 2008

I have gone through most of the past post on the same topic still there is one unanswered question.

We have a clustered set up for JBM-1.4.0 SP3 with JAS-4.2.1 , two instance A n B are part of the cluster.
We have a test client which inside a for loop does follwing.

  | QueueConnectionFactory qcf = (QueueConnectionFactory) cntxt
  | 				.lookup("/ClusteredConnectionFactory");
  | 				Queue queue = (Queue) cntxt.lookup("queue/RequestQueue");
  | 				QueueConnection qc = qcf.createQueueConnection();
  | 				QueueSession qs = qc.createQueueSession(false,
  | 				Session.AUTO_ACKNOWLEDGE);
  | 				QueueSender queueSender = qs.createSender(queue);
  | ObjectMessage msg = qs.createObjectMessage(batchId);
  | queueSender.send(msg);

Here we are using  HA-JNDI for  lookup.
We are using default  ClusterredConnectionFactory which has ,

  | <attribute name="SupportsFailover">true</attribute>
  | <attribute name="SupportsLoadBalancing">true</attribute>      
  | <attribute name="LoadBalancingFactory">org.jboss.jms.client.plugin.RoundRobinLoadBalancingFactory</attribute>
For RequestQueue is set  to Cluster  TRUE in  destination-service.xml.
As per our expectation messages should be distributed in round  robin fashion , We have around 80% results when  it is not distributed in round robbin fashion.
Is there any other attribute which controls distribution ?
For some cases it goes to one server only.
Our client runs on different server so A and B both are remote server for client.

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