db.role.dropIndex("uid_1");
db.role.dropIndex("client_id_1_name_1");
db.role.dropIndex("client_id_1");
db.role.dropIndex("status_1");
db.role.dropIndex("client_id_1_status_1");
db.role.dropIndex("create_time_1");
db.role.dropIndex("update_time_-1");