通过如下命令完成停止OBSERVER:
ALTER SYSTEM STOP SERVER 'ip:port' [, 'ip:port'] [ZONE='zone'];
__all_server 的status列状态为Inactive, stop_time>0
通过如下命令完成启动OBSERVER:
ALTER SYSTEM START SERVER 'ip:port'[, 'ip:port'...] [ZONE='zone name'];
__all_server 的status列状态为active, start_service_time>0
上面的说法是否正确?