AssignReplicasToDirs
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 0 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
- 73
- Encoded at
- v0
- Flexible versions
- 0+
- Headers
- req v2, resp v1
- Request versions
- 0
- Response versions
- 0
- Request size
- 70 bytes
- Response size
- 60 bytes
framerpc headerrequest bodyRecordBatchRecordresponse bodytagged_fields
Request
AssignReplicasToDirsRequest v0, request header v2, 70 bytes on the wire
byte layout (70 bytes, 16 bytes per row)
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AssignReplicasToDirsRequest message v0 [0x0000, 70B] +-- Frame [0x0000, 4B] length-delimited framing | +-- size int32 = 66 [0x0000, 4B] number of bytes that follow, patched after encoding +-- RequestHeader v2 [0x0004, 11B] common request header | +-- request_api_key int16 = 73 (AssignReplicasToDirs) [0x0004, 2B] numeric id of the API being invoked | +-- request_api_version int16 = 0 [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 +-- AssignReplicasToDirsRequest struct [0x000f, 55B] message body, version 0 +-- BrokerId int32 = 0 [0x000f, 4B] The ID of the requesting broker. +-- BrokerEpoch int64 = 0 [0x0013, 8B] The epoch of the requesting broker. +-- Directories []DirectoryData = 1 element [0x001b, 42B] The directories to which replicas should be assigned. | +-- length uvarint = 2 (compact, n+1) [0x001b, 1B] one sample element follows | +-- DirectoryData[0] DirectoryData = struct [0x001c, 41B] | +-- Id uuid = 00000000-0000-0000-0000-000000000000 [0x001c, 16B] The ID of the directory. | +-- Topics []TopicData = 1 element [0x002c, 24B] The topics assigned to the directory. | | +-- length uvarint = 2 (compact, n+1) [0x002c, 1B] one sample element follows | | +-- TopicData[0] TopicData = struct [0x002d, 23B] | | +-- TopicId uuid = 00000000-0000-0000-0000-000000000000 [0x002d, 16B] The ID of the assigned topic. | | +-- Partitions []PartitionData = 1 element [0x003d, 6B] The partitions assigned to the directory. | | | +-- length uvarint = 2 (compact, n+1) [0x003d, 1B] one sample element follows | | | +-- PartitionData[0] PartitionData = struct [0x003e, 5B] | | | +-- PartitionIndex int32 = 0 [0x003e, 4B] The partition index. | | | +-- tagged_fields uvarint = 0 [0x0042, 1B] number of tagged fields in this struct | | +-- tagged_fields uvarint = 0 [0x0043, 1B] number of tagged fields in this struct | +-- tagged_fields uvarint = 0 [0x0044, 1B] number of tagged fields in this struct +-- tagged_fields uvarint = 0 [0x0045, 1B] number of tagged fields in this struct
kafka message schema (.json)
{ "apiKey": 73, "type": "request", "listeners": ["controller"], "name": "AssignReplicasToDirsRequest", "validVersions": "0", "flexibleVersions": "0+", "fields": [ { "name": "BrokerId", "type": "int32", "versions": "0+", "entityType": "brokerId", "about": "The ID of the requesting broker." }, { "name": "BrokerEpoch", "type": "int64", "versions": "0+", "default": "-1", "about": "The epoch of the requesting broker." }, { "name": "Directories", "type": "[]DirectoryData", "versions": "0+", "about": "The directories to which replicas should be assigned.", "fields": [ { "name": "Id", "type": "uuid", "versions": "0+", "about": "The ID of the directory." }, { "name": "Topics", "type": "[]TopicData", "versions": "0+", "about": "The topics assigned to the directory.", "fields": [ { "name": "TopicId", "type": "uuid", "versions": "0+", "about": "The ID of the assigned topic." }, { "name": "Partitions", "type": "[]PartitionData", "versions": "0+", "about": "The partitions assigned to the directory.", "fields": [ { "name": "PartitionIndex", "type": "int32", "versions": "0+", "about": "The partition index." } ]} ]} ]} ] }
Response
AssignReplicasToDirsResponse v0, response header v1, 60 bytes on the wire
byte layout (60 bytes, 16 bytes per row)
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AssignReplicasToDirsResponse message v0 [0x0000, 60B] +-- Frame [0x0000, 4B] length-delimited framing | +-- size int32 = 56 [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 +-- AssignReplicasToDirsResponse struct [0x0009, 51B] message body, version 0 +-- ThrottleTimeMs int32 = 0 [0x0009, 4B] The duration in milliseconds for which the request was throttled due to a q... +-- ErrorCode int16 = 0 [0x000d, 2B] The top level response error code. +-- Directories []DirectoryData = 1 element [0x000f, 44B] The list of directories and their assigned partitions. | +-- length uvarint = 2 (compact, n+1) [0x000f, 1B] one sample element follows | +-- DirectoryData[0] DirectoryData = struct [0x0010, 43B] | +-- Id uuid = 00000000-0000-0000-0000-000000000000 [0x0010, 16B] The ID of the directory. | +-- Topics []TopicData = 1 element [0x0020, 26B] The list of topics and their assigned partitions. | | +-- length uvarint = 2 (compact, n+1) [0x0020, 1B] one sample element follows | | +-- TopicData[0] TopicData = struct [0x0021, 25B] | | +-- TopicId uuid = 00000000-0000-0000-0000-000000000000 [0x0021, 16B] The ID of the assigned topic. | | +-- Partitions []PartitionData = 1 element [0x0031, 8B] The list of assigned partitions. | | | +-- length uvarint = 2 (compact, n+1) [0x0031, 1B] one sample element follows | | | +-- PartitionData[0] PartitionData = struct [0x0032, 7B] | | | +-- PartitionIndex int32 = 0 [0x0032, 4B] The partition index. | | | +-- ErrorCode int16 = 0 [0x0036, 2B] The partition level error code. | | | +-- tagged_fields uvarint = 0 [0x0038, 1B] number of tagged fields in this struct | | +-- tagged_fields uvarint = 0 [0x0039, 1B] number of tagged fields in this struct | +-- tagged_fields uvarint = 0 [0x003a, 1B] number of tagged fields in this struct +-- tagged_fields uvarint = 0 [0x003b, 1B] number of tagged fields in this struct
kafka message schema (.json)
{ "apiKey": 73, "type": "response", "name": "AssignReplicasToDirsResponse", "validVersions": "0", "flexibleVersions": "0+", "fields": [ { "name": "ThrottleTimeMs", "type": "int32", "versions": "0+", "about": "The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota." }, { "name": "ErrorCode", "type": "int16", "versions": "0+", "about": "The top level response error code." }, { "name": "Directories", "type": "[]DirectoryData", "versions": "0+", "about": "The list of directories and their assigned partitions.", "fields": [ { "name": "Id", "type": "uuid", "versions": "0+", "about": "The ID of the directory." }, { "name": "Topics", "type": "[]TopicData", "versions": "0+", "about": "The list of topics and their assigned partitions.", "fields": [ { "name": "TopicId", "type": "uuid", "versions": "0+", "about": "The ID of the assigned topic." }, { "name": "Partitions", "type": "[]PartitionData", "versions": "0+", "about": "The list of assigned partitions.", "fields": [ { "name": "PartitionIndex", "type": "int32", "versions": "0+", "about": "The partition index." }, { "name": "ErrorCode", "type": "int16", "versions": "0+", "about": "The partition level error code." } ]} ]} ]} ] }