- public ClusterWrapperImpl(ActorSystem actorSystem){
- cluster = Cluster.get(actorSystem);
- currentMemberName = (String) cluster.getSelfRoles().toArray()[0];
+ checkState(cluster.getSelfRoles().size() > 0,
+ "No akka roles were specified.\n"
+ + "One way to specify the member name is to pass a property on the command line like so\n"
+ + " -Dakka.cluster.roles.0=member-3\n"
+ + "member-3 here would be the name of the member");