Page History

...

It is possible for the leader to write an AddVoterRecord to the log and replica it to some of the voters in the new configuration. If the leader fails before this record has been replicated to the new voter it is possible that a new leader cannot be elected. This is because voters reject vote request from replicas that are not in the voter set. This check will be removed and replicas will reply to votes request when the candidate is not in the voter set or the voting replica is not in the voter set. The candidate must still have a longer log offset and epoch before the voter will grant a vote to it.

First Leader

TODO: Talk about the leader When a KRaft voter becomes leader it will write a KRaftVersionRecord and VotersRecord to the log if the log or the latest snapshot doesn't contain any VotersRecord. This is done to make sure that the latest voter set came from in the bootstrapping snapshotbootstrap snapshot gets replicated to all of the voters and to not rely on all of the voters being configured with the same bootstrapped voter set.

Automatic endpoint and directory id discovery

...