Comments (5)
节点状态和版本信息,是通过 gossip 进行传播,以固定间隔时间,一个节点传播一个节点,10s以内基本就传播完成,达到最终一致,所以刚启动时,如果遇到在不同meta节点上show,Version有的没显示,看看过一段时间是否都能显示?
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意思是广播节点信息是在不断重复进行的嘛?
因为在服务器2的meta节点show,Version信息是不断变化的过程:
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意思是广播节点信息是在不断重复进行的嘛?
是的
每个 meta 和 data 节点都会将自己的状态和版本信息,meta 节点每隔 gossip-frequency = "5s"、data 节点每隔 gossip-frequency = "3s" 传播出去,新的节点收到这个信息后还会携带这个信息加上自己的信息,继续随机传播下去,所以基本上很快就会收敛,每个 meta 节点上 show,都能看到所有节点的状态和版本。这些信息会被保留 announcement-expiration = "30s",如果没有新的传播信息过来的话
另外,在服务器2的 meta 节点 show,会看到 version 都显示的情况吗?
也可以适当调整这 3 个参数,例如把报告间隔改小一些
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关于 Gossip 协议,可以看下面这篇介绍:Gossip 协议
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另外,在服务器2的 meta 节点 show,会看到 version 都显示的情况吗?
会的,上面的图就是meta节点在服务器2上show的几次结果。
感谢答疑,多谢~~
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