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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2022/01/18 07:12:45 UTC

[GitHub] [rocketmq] hzh0425 commented on issue #3747: Reduce election time

hzh0425 commented on issue #3747:
URL: https://github.com/apache/rocketmq/issues/3747#issuecomment-1015129513


   例如对于 raft 的 leader transfer
   oldLeader 必须等待 newLeader 追上自己, 才能实现 leader 的切换, 否则的日志会出现丢失的情况
   例如:
   oldLeader: 1 2 3 4 5 6
   newLeader: 1 2 3 4
   如果直接实现 NewLeader 切换, 那么 5 6 两条消息就会丢失, 即使其他的 follower 包含 5 和 6 的消息, 也会被迫和 newLeader 保持一致
   


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