Kafka RenewDelegationToken Response Wire Format v1 — Binary Protocol Layout

What is RenewDelegationToken?

Token holders call this before expiry to extend the token's lifetime, typically on a renewal thread. If renewal fails (e.g., the broker lost in-memory token state in older Kafka), the client must re-authenticate with primary credentials.

Schema
{
  "ErrorCode": int16,
  "ExpiryTimestampMs": int64,
  "ThrottleTimeMs": int32
}

Example
{
  "ErrorCode": 0,
  "ExpiryTimestampMs": 0,
  "ThrottleTimeMs": 0
}