During the development of KIP-630 we made some minor changes to the KIP to better match the implementation details. Here is a summary of the changes we made to the KIP:
1. Added control records at the begin and end of the snapshots. The control records are versioned. The snapshot header record includes the append time of the last record from the log included in the snapshot. This is useful when determining when to delete a snapshot. 2. The configuration property metadata.snapshot.min.new_records.size was renamed to metadata.log.max.record.bytes.between.snapshots. 3. The FetchSnapshotRequest schema was changed to include the cluster id and the current leader epoch. This is used by the leader of the metadata log to validate that the request matches the current cluster id and the current leader epoch. 4. The FetchSnapshotResponse schema was changed to include the snapshot id. KIP-630: https://cwiki.apache.org/confluence/x/exV4CQ Thanks! -Jose
