text: create table saturn_domain_process_history
  (
  	id int auto_increment
  		primary key,
  	zk_cluster varchar(256) null ,
  	success_count int null ,
  	fail_count int null ,
  	record_date varchar(256) null ,
  	constraint saturn_domain_process_history_zk_cluster_record_date_uindex
  		unique (zk_cluster, record_date)
  );