EndQuorumEpoch
This page encodes the smallest legal instance of the request and the response: numeric fields are zero, strings and byte arrays are empty, every array carries exactly one sample element, and any records field holds one empty 61-byte RecordBatch v2. Version 1 is a flexible version, so every struct is terminated by a uvarint tagged-field count and strings and arrays carry compact length-plus-one prefixes. Sizes below include the leading int32 size prefix.
- API key
- 54
- Encoded at
- v1
- Flexible versions
- 1+
- Headers
- req v2, resp v1
- Request versions
- 0-1
- Response versions
- 0-1
- Request size
- 62 bytes
- Response size
- 31 bytes
framerpc headerrequest bodyRecordBatchRecordresponse bodytagged_fields
Request
EndQuorumEpochRequest v1, request header v2, 62 bytes on the wire
byte layout (62 bytes, 16 bytes per row)
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EndQuorumEpochRequest message v1 [0x0000, 62B] +-- Frame [0x0000, 4B] length-delimited framing | +-- size int32 = 58 [0x0000, 4B] number of bytes that follow, patched after encoding +-- RequestHeader v2 [0x0004, 11B] common request header | +-- request_api_key int16 = 54 (EndQuorumEpoch) [0x0004, 2B] numeric id of the API being invoked | +-- request_api_version int16 = 1 [0x0006, 2B] version of the API being invoked | +-- correlation_id int32 = 0 [0x0008, 4B] echoed back by the broker in the response | +-- client_id nullable_string = "" (int16 len=0) [0x000c, 2B] always a non-flexible int16-prefixed string | +-- tagged_fields uvarint = 0 [0x000e, 1B] number of tagged fields in the header +-- EndQuorumEpochRequest struct [0x000f, 47B] message body, version 1 +-- ClusterId string = "" (compact, len+1=1) [0x000f, 1B] The cluster id. +-- Topics []TopicData = 1 element [0x0010, 39B] The topics. | +-- length uvarint = 2 (compact, n+1) [0x0010, 1B] one sample element follows | +-- TopicData[0] TopicData = struct [0x0011, 38B] | +-- TopicName string = "" (compact, len+1=1) [0x0011, 1B] The topic name. | +-- Partitions []PartitionData = 1 element [0x0012, 36B] The partitions. | | +-- length uvarint = 2 (compact, n+1) [0x0012, 1B] one sample element follows | | +-- PartitionData[0] PartitionData = struct [0x0013, 35B] | | +-- PartitionIndex int32 = 0 [0x0013, 4B] The partition index. | | +-- LeaderId int32 = 0 [0x0017, 4B] The current leader ID that is resigning. | | +-- LeaderEpoch int32 = 0 [0x001b, 4B] The current epoch. | | +-- PreferredCandidates []ReplicaInfo = 1 element [0x001f, 22B] A sorted list of preferred candidates to start the election. | | | +-- length uvarint = 2 (compact, n+1) [0x001f, 1B] one sample element follows | | | +-- ReplicaInfo[0] ReplicaInfo = struct [0x0020, 21B] | | | +-- CandidateId int32 = 0 [0x0020, 4B] The ID of the candidate replica. | | | +-- CandidateDirectoryId uuid = 00000000-0000-0000-0000-000000000000 [0x0024, 16B] The directory ID of the candidate replica. | | | +-- tagged_fields uvarint = 0 [0x0034, 1B] number of tagged fields in this struct | | +-- tagged_fields uvarint = 0 [0x0035, 1B] number of tagged fields in this struct | +-- tagged_fields uvarint = 0 [0x0036, 1B] number of tagged fields in this struct +-- LeaderEndpoints []LeaderEndpoint = 1 element [0x0037, 6B] Endpoints for the leader. | +-- length uvarint = 2 (compact, n+1) [0x0037, 1B] one sample element follows | +-- LeaderEndpoint[0] LeaderEndpoint = struct [0x0038, 5B] | +-- Name string = "" (compact, len+1=1) [0x0038, 1B] The name of the endpoint. | +-- Host string = "" (compact, len+1=1) [0x0039, 1B] The node's hostname. | +-- Port uint16 = 0 [0x003a, 2B] The node's port. | +-- tagged_fields uvarint = 0 [0x003c, 1B] number of tagged fields in this struct +-- tagged_fields uvarint = 0 [0x003d, 1B] number of tagged fields in this struct
kafka message schema (.json)
{ "apiKey": 54, "type": "request", "listeners": ["controller"], "name": "EndQuorumEpochRequest", // Version 1 adds flexible versions, replaces preferred successors with preferred candidates // and adds leader endpoints (KIP-853) "validVersions": "0-1", "flexibleVersions": "1+", "fields": [ { "name": "ClusterId", "type": "string", "versions": "0+", "nullableVersions": "0+", "default": "null", "about": "The cluster id."}, { "name": "Topics", "type": "[]TopicData", "versions": "0+", "about": "The topics.", "fields": [ { "name": "TopicName", "type": "string", "versions": "0+", "entityType": "topicName", "about": "The topic name." }, { "name": "Partitions", "type": "[]PartitionData", "versions": "0+", "about": "The partitions.", "fields": [ { "name": "PartitionIndex", "type": "int32", "versions": "0+", "about": "The partition index." }, { "name": "LeaderId", "type": "int32", "versions": "0+", "entityType": "brokerId", "about": "The current leader ID that is resigning."}, { "name": "LeaderEpoch", "type": "int32", "versions": "0+", "about": "The current epoch."}, { "name": "PreferredSuccessors", "type": "[]int32", "versions": "0", "ignorable": true, "about": "A sorted list of preferred successors to start the election." }, { "name": "PreferredCandidates", "type": "[]ReplicaInfo", "versions": "1+", "ignorable": true, "about": "A sorted list of preferred candidates to start the election.", "fields": [ { "name": "CandidateId", "type": "int32", "versions": "1+", "entityType": "brokerId", "about": "The ID of the candidate replica."}, { "name": "CandidateDirectoryId", "type": "uuid", "versions": "1+", "about": "The directory ID of the candidate replica."} ] } ] } ] }, { "name": "LeaderEndpoints", "type": "[]LeaderEndpoint", "versions": "1+", "ignorable": true, "about": "Endpoints for the leader.", "fields": [ { "name": "Name", "type": "string", "versions": "1+", "mapKey": true, "about": "The name of the endpoint." }, { "name": "Host", "type": "string", "versions": "1+", "about": "The node's hostname." }, { "name": "Port", "type": "uint16", "versions": "1+", "about": "The node's port." } ] } ] }
Response
EndQuorumEpochResponse v1, response header v1, 31 bytes on the wire
byte layout (31 bytes, 16 bytes per row)
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EndQuorumEpochResponse message v1 [0x0000, 31B] +-- Frame [0x0000, 4B] length-delimited framing | +-- size int32 = 27 [0x0000, 4B] number of bytes that follow, patched after encoding +-- ResponseHeader v1 [0x0004, 5B] common response header | +-- correlation_id int32 = 0 [0x0004, 4B] matches the correlation_id of the request | +-- tagged_fields uvarint = 0 [0x0008, 1B] number of tagged fields in the header +-- EndQuorumEpochResponse struct [0x0009, 22B] message body, version 1 +-- ErrorCode int16 = 0 [0x0009, 2B] The top level error code. +-- Topics []TopicData = 1 element [0x000b, 19B] The topic data. | +-- length uvarint = 2 (compact, n+1) [0x000b, 1B] one sample element follows | +-- TopicData[0] TopicData = struct [0x000c, 18B] | +-- TopicName string = "" (compact, len+1=1) [0x000c, 1B] The topic name. | +-- Partitions []PartitionData = 1 element [0x000d, 16B] The partition data. | | +-- length uvarint = 2 (compact, n+1) [0x000d, 1B] one sample element follows | | +-- PartitionData[0] PartitionData = struct [0x000e, 15B] | | +-- PartitionIndex int32 = 0 [0x000e, 4B] The partition index. | | +-- ErrorCode int16 = 0 [0x0012, 2B] The partition level error code. | | +-- LeaderId int32 = 0 [0x0014, 4B] The ID of the current leader or -1 if the leader is unknown. | | +-- LeaderEpoch int32 = 0 [0x0018, 4B] The latest known leader epoch. | | +-- tagged_fields uvarint = 0 [0x001c, 1B] number of tagged fields in this struct | +-- tagged_fields uvarint = 0 [0x001d, 1B] number of tagged fields in this struct +-- tagged_fields uvarint = 0 [0x001e, 1B] number of tagged fields in this struct
kafka message schema (.json)
{ "apiKey": 54, "type": "response", "name": "EndQuorumEpochResponse", // Version 1 adds flexible versions and leader endpoint (KIP-853) "validVersions": "0-1", "flexibleVersions": "1+", "fields": [ { "name": "ErrorCode", "type": "int16", "versions": "0+", "about": "The top level error code."}, { "name": "Topics", "type": "[]TopicData", "versions": "0+", "about": "The topic data.", "fields": [ { "name": "TopicName", "type": "string", "versions": "0+", "entityType": "topicName", "about": "The topic name." }, { "name": "Partitions", "type": "[]PartitionData", "versions": "0+", "about": "The partition data.", "fields": [ { "name": "PartitionIndex", "type": "int32", "versions": "0+", "about": "The partition index." }, { "name": "ErrorCode", "type": "int16", "versions": "0+", "about": "The partition level error code."}, { "name": "LeaderId", "type": "int32", "versions": "0+", "entityType": "brokerId", "about": "The ID of the current leader or -1 if the leader is unknown."}, { "name": "LeaderEpoch", "type": "int32", "versions": "0+", "about": "The latest known leader epoch."} ] } ] }, { "name": "NodeEndpoints", "type": "[]NodeEndpoint", "versions": "1+", "taggedVersions": "1+", "tag": 0, "about": "Endpoints for all leaders enumerated in PartitionData.", "fields": [ { "name": "NodeId", "type": "int32", "versions": "1+", "mapKey": true, "entityType": "brokerId", "about": "The ID of the associated node." }, { "name": "Host", "type": "string", "versions": "1+", "about": "The node's hostname." }, { "name": "Port", "type": "uint16", "versions": "1+", "about": "The node's port." } ] } ] }