@ManagedOperation(description="Stop Schema cluster") public boolean stopCluster() { if (schemaInstance == null) { return false; } java.util.Collection<Member> members; if (schemaInstance instanceof HazelcastClientInstanceImpl) { members = ((HazelcastClientInstanceImpl) schemaInstance).getClientClusterService().getMemberList(); } else { members = schemaInstance.getCluster().getMembers(); } Runnable task = new NodeKiller(entityName); execService.executeOnMembers(task, members); return true; }