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Posted to issues@ratis.apache.org by GitBox <gi...@apache.org> on 2021/09/18 03:31:16 UTC

[GitHub] [ratis] kaijchen commented on pull request #500: RATIS-1403. should not change state when request is rejected

kaijchen commented on pull request #500:
URL: https://github.com/apache/ratis/pull/500#issuecomment-922171562


   > can you give a case that a candidate has a higher term(recognizeCandidate(candidateTerm) != null), but decideVote(..) still returns false?
   
   1. candidate's term >  leader's term
   2. candidate's last log term < leader's last log term
   
   Leader should reject the VoteFor request, and step down.
   
   We can see the etcd's implementation for reference. Note in go, the switch-case doesn't fallthrough.
   https://github.com/etcd-io/etcd/blob/706f256a054b2158ba5dc2e59cbab45826063829/raft/raft.go#L847


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