Kafka AllocateProducerIds Response Wire Format v0 — Binary Protocol Layout

What is AllocateProducerIds?

Brokers request a batch of producer IDs from the KRaft controller, which maintains the global monotonically increasing counter. In KRaft mode, all producer ID allocation goes through this API, ensuring no two brokers hand out the same ID.

Schema
{
  "ThrottleTimeMs": int32,
  "ErrorCode": int16,
  "ProducerIdStart": int64,
  "ProducerIdLen": int32
}

Example
{
  "ThrottleTimeMs": 0,
  "ErrorCode": 0,
  "ProducerIdStart": 0,
  "ProducerIdLen": 1
}