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Kafka StreamsGroupDescribe Request Wire Format v0 — Binary Protocol Layout

What is StreamsGroupDescribe?

Shows Kafka Streams groups managed under the broker-side assignor (KIP-1071), with per-member task assignments (active, standby, warm-up) and the group epoch. Rapidly incrementing epochs indicate frequent membership changes, which could signal instability.

Related Errors

COORDINATOR_NOT_AVAILABLE · GROUP_AUTHORIZATION_FAILED · GROUP_ID_NOT_FOUND · INVALID_GROUP_ID · TOPIC_AUTHORIZATION_FAILED · UNSUPPORTED_VERSION

Wire Diagram

Request Header · flexible
message_size int32 · 4B
api_key int16 · 2B
api_version int16 · 2B
correlation_id int32 · 4B
client_id string (compact)
tagged var
StreamsGroupDescribeRequest v0
GroupIds []string
IncludeAuthorizedOperations bool · 1B
tagged var

Schema & Example

Schema
{
  "GroupIds": [string],
  "IncludeAuthorizedOperations": bool
}
Example
{
  "GroupIds": ["value-1", "value-2"],
  "IncludeAuthorizedOperations": 2
}