Kafka AddRaftVoter Response Wire Format v1 — Binary Protocol Layout

What is AddRaftVoter?

Expands the KRaft controller quorum by adding a new voter node. The new node must catch up with the leader before participating in elections. Expanding from 3 to 5 voters increases fault tolerance from losing 1 node to losing 2.

Schema
{
  "ThrottleTimeMs": int32,
  "ErrorCode": int16,
  "ErrorMessage": string?
}

Example
{
  "ThrottleTimeMs": 0,
  "ErrorCode": 0,
  "ErrorMessage": null
}