After the leader node submits the index, how to notify the follower to submit it

[zsh1232]

leader节点执行完状态机，把这次的index提交之后，什么时候通知的follower节点也提交呢？ 我看现象是follower也立刻跟着提交了，但是这块代码没有找到。想问下具体是怎么实现的，谢谢~

[sofastack-bot]

Hi @zsh1232, we detect non-English characters in the issue. This comment is an auto translation by @sofastack-robot to help other users to understand this issue.

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After the leader node executes the state machine, when the index is submitted, when will the notified follower node also submit? I see that the follower submitted immediately, but this code was not found. I want to ask how it is achieved, thank you ~

[fengjiachun]

leader 会往 follower 发送 lastCommittedIndex， 详情见

com.alipay.sofa.jraft.core.NodeImpl#handleAppendEntriesRequest
com.alipay.sofa.jraft.core.BallotBox#setLastCommittedIndex

[zsh1232]

thank you~

[killme2008]

源码阅读可以参考这里的文章

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