Red Hat Training

A Red Hat training course is available for JBoss Enterprise Application Platform Common Criteria Certification

20.3. Stateless Session Bean in EJB 2.x

To make an EJB 2.x bean clustered, you need to modify its jboss.xml descriptor to contain a <clustered> tag. 
<jboss>
  <enterprise-beans>
    <session>
      <ejb-name>nextgen.StatelessSession</ejb-name>
      <jndi-name>nextgen.StatelessSession</jndi-name>
      <clustered>true</clustered>
      <cluster-config>
        <partition-name>DefaultPartition</partition-name>
        <home-load-balance-policy>org.jboss.ha.framework.interfaces.RoundRobin</home-load-balance-policy>
        <bean-load-balance-policy>org.jboss.ha.framework.interfaces.RoundRobin</bean-load-balance-policy>
      </cluster-config>
    </session>
  </enterprise-beans>
</jboss>
  • partition-name specifies the name of the cluster the bean participates in. The default value is DefaultPartition. The default partition name can also be set system-wide using the jboss.partition.name system property.
  • home-load-balance-policy indicates the class to be used by the home stub to balance calls made on the nodes of the cluster. By default, the proxy will load-balance calls in a RoundRobin fashion.
  • bean-load-balance-policy Indicates the class to be used by the bean stub to balance calls made on the nodes of the cluster. By default, the proxy will load-balance calls in a RoundRobin fashion.