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Update project2-RaftKV.md (#386)

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fix SaveRaftState() which is not exist  to SaveReadyState()
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zhangpc 2022-04-07 18:28:26 +08:00 committed by GitHub
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@ -193,7 +193,7 @@ In this stage, you may consider these errors, and others will be processed in pr
> Hints:
>
> - `PeerStorage` implements the `Storage` interface of the Raft module, you should use the provided method `SaveRaftReady()` to persist the Raft related states.
> - `PeerStorage` implements the `Storage` interface of the Raft module, you should use the provided method `SaveReadyState()` to persist the Raft related states.
> - Use `WriteBatch` in `engine_util` to make multiple writes atomically, for example, you need to make sure to apply the committed entries and update the applied index in one write batch.
> - Use `Transport` to send raft messages to other peers, it’s in the `GlobalContext`,
> - The server should not complete a get RPC if it is not part of a majority and does not has up-to-date data. You can just put the get operation into the raft log, or implement the optimization for read-only operations that is described in Section 8 in the Raft paper.