self->number_of_hosts= 0;
memcached_instance_free((org::libmemcached::Instance*)self->last_disconnected_server);
self->last_disconnected_server= NULL;
self->number_of_hosts= 0;
memcached_instance_free((org::libmemcached::Instance*)self->last_disconnected_server);
self->last_disconnected_server= NULL;