doc url: [移除集群中分布式锁的方式](https://actiontech.github.io/dble-docs-cn/history/develop/2.Function/2.08_cluster.html#:~:text=%E7%9A%84Step%E5%80%BC%E3%80%82-,2.8.9%20%E7%A7%BB%E9%99%A4%E9%9B%86%E7%BE%A4%E4%B8%AD%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81%E7%9A%84%E6%96%B9%E5%BC%8F,-%E5%89%8D%E7%BD%AE%E7%9F%A5%E8%AF%86)
