"Due to the nature of Raft, there is a very small window (milliseconds) where a node has been disposed as leader, but has not yet changed its internal state. Th

"Due to the nature of Raft, there is a very small window (milliseconds) where a node has been disposed as leader, but has not yet changed its internal state. Therefore, even with the leader check in place, there is a very small window of time where out-of-date results could be returned." No, that's absolutely not inherent to the nature of Raft. It sounds like they're making the same mistake that etcd did, simply relying on whether a node believes it's still the leader rather than having it confirm that fact by committing a log entry: https://aphyr.com/posts/316-jepsen-etcd-and-consul https://aphyr.com/posts/316-jepsen-etcd-and-consul