Rules for servers

[jiange91]

mit-6.824-labs/src/raft/raft.go

Lines 343 to 347 in c996f20

	if reply.Term > rf.currentTerm {
	rf.stepDownToFollower(args.Term)
	rf.persist()
	return
	}

Hi, Thanks for the excellent work. I have trouble understanding this block of codes. According to the paper, If RPC request or response contains term T > currentTerm, we set currentTerm = T and convert to follower. Then why using args.Term when converting to follower instead of reply.Term

[MStreet3]

a follower should not change the state of a candidate, it should only deny it a vote and tell it the higher term.

if a candidate receives a higher term in a RequestVoteReply, it will end its candidacy, step back to follower and keep its faulty term.

the leader will make the follower update its term when the follower handles an AppendEntries request.

mit-6.824-labs/src/raft/raft.go

Lines 397 to 399 in c996f20

	if args.Term > rf.currentTerm {
	rf.stepDownToFollower(args.Term)
	}