Check the "retry" part, basically when there is a split-brain during an election, a new process will try again and eventually will succeed. This is copied from Raft.
It works because when some instance retries, it increments again the currentEpoch, so ti is a new voting process from the point of view of the voters.
Btw it is not needed that to retry is the instance that did it the previous time, because even if the voting failed, the currentEpoch of the process that tried to get elected, will be propagated across the system, so every process will get the new epoch, and can try with an updated epoch to get voted.
Comments
Check the "retry" part, basically when there is a split-brain during an election, a new process will try again and eventually will succeed. This is copied from Raft.
It works because when some instance retries, it increments again the currentEpoch, so ti is a new voting process from the point of view of the voters.
Btw it is not needed that to retry is the instance that did it the previous time, because even if the voting failed, the currentEpoch of the process that tried to get elected, will be propagated across the system, so every process will get the new epoch, and can try with an updated epoch to get voted.