[jboss-user] [Clustering/JBoss] - Re: Load balancing and dev environment

[bstansberry@jboss.com]

For EJB2, you can change the defaults in the conf/standardjboss.xml file.  File contains a number of "container-configuration" elements; search for those that include a "cluster-config" subelement.  Each is the default for a particular type of clustered EJB.


  | <cluster-config>
  |    <partition-name>${jboss.partition.name:DefaultPartition}</partition-name>
  | </cluster-config>

You can change the default load balance polices by adding sub-elements:


  | <cluster-config>
  | <partition-name>${jboss.partition.name:DefaultPartition}</partition-name>
  | <home-load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailableIdenticalAllProxies</home-load-balance-policy>
  | <bean-load-balance-policy>org.jboss.ha.framework.interfaces.FirstAvailableIdenticalAllProxies</bean-load-balance-policy>
  | </cluster-config>
  | 

For EJB3 I don't see a clean way to override the default. It's configured via the deploy/ejb3-interceptors-aop.xml file. There's two sections


  | <domain name="Stateless Bean">
  |    ......
  | </domain>
  | 

and 


  | <domain name="Stateful Bean">
  |    ......
  | </domain>
  | 

where perhaps you could try adding something like:


  | <annotation expr="class(@org.jboss.annotation.ejb.Clustered)">
  | @org.jboss.annotation.ejb.Clustered(loadBalancePolicy=org.jboss.ha.framework.interfaces.FirstAvailableIdenticalAllProxies.class)
  | </annotation>
  | 

i.e. attempt to override the annotation value for beans that have @Clustered.  Don't know if that would work. If it does work it will remove the ability to annotate a particular class with different values from what you specify here.


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