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Kafka IncrementalAlterConfigs Response Wire Format v0 — Binary Protocol Layout

What is IncrementalAlterConfigs?

Applies targeted config changes via kafka-configs.sh (v2.3+) without touching other settings. Supports SET, DELETE, APPEND, and SUBTRACT operations. Use this instead of AlterConfigs, which is legacy and wipes unspecified keys.

Wire Diagram

Response Header
message_size int32 · 4B
correlation_id int32 · 4B
IncrementalAlterConfigsResponse v0
ThrottleTimeMs int32 · 4B
Responses array
ErrorCode int16 · 2B
ErrorMessage? string
ResourceType int8 · 1B
ResourceName string

Schema & Example

Schema
{
  "ThrottleTimeMs": int32,
  "Responses": [{
      "ErrorCode": int16,
      "ErrorMessage": string?,
      "ResourceType": int8,
      "ResourceName": string
  }]
}
Example
{
  "ThrottleTimeMs": 0,
  "Responses": [{
      "ErrorCode": 0,
      "ErrorMessage": null,
      "ResourceType": 2,
      "ResourceName": "orders"
  }]
}