@Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (this.host == null ? 0 : this.host.hashCode());
        result = prime * result + this.id;
        result = prime * result + this.port;
        result = prime * result + this.slaveId >= 0 ? this.slaveId : -1;
        return result;
    }
@param id
@param data
           , meta://host:port or meta://host:port?slaveId=xx
metamorphosis-commons/src/main/java/com/taobao/metamorphosis/cluster/Broker.java