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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
{
"apiKey": 6,
"type": "request",
"listeners": ["zkBroker"],
"name": "UpdateMetadataRequest",
// Version 1 allows specifying multiple endpoints for each broker.
//
// Version 2 adds the rack.
//
// Version 3 adds the listener name.
//
// Version 4 adds the offline replica list.
//
// Version 5 adds the broker epoch field and normalizes partitions by topic.
//
// Version 7 adds topicId
//
// Version 8 adds KRaft Controller ID field as part of KIP-866
"validVersions": "0-8",
"flexibleVersions": "6+",
"fields": [
{ "name": "ControllerId", "type": "int32", "versions": "0+", "entityType": "brokerId",
"about": "The controller id." },
{ "name": "isKRaftController", "type": "bool", "versions": "8+", "default": "false",
"about": "If KRaft controller id is used during migration. See KIP-866" },
{ "name": "ControllerEpoch", "type": "int32", "versions": "0+",
"about": "The controller epoch." },
{ "name": "BrokerEpoch", "type": "int64", "versions": "5+", "ignorable": true, "default": "-1",
"about": "The broker epoch." },
{ "name": "UngroupedPartitionStates", "type": "[]UpdateMetadataPartitionState", "versions": "0-4",
"about": "In older versions of this RPC, each partition that we would like to update." },
{ "name": "TopicStates", "type": "[]UpdateMetadataTopicState", "versions": "5+",
"about": "In newer versions of this RPC, each topic that we would like to update.", "fields": [
{ "name": "TopicName", "type": "string", "versions": "5+", "entityType": "topicName",
"about": "The topic name." },
{ "name": "TopicId", "type": "uuid", "versions": "7+", "ignorable": true, "about": "The topic id."},
{ "name": "PartitionStates", "type": "[]UpdateMetadataPartitionState", "versions": "5+",
"about": "The partition that we would like to update." }
]},
{ "name": "LiveBrokers", "type": "[]UpdateMetadataBroker", "versions": "0+", "fields": [
{ "name": "Id", "type": "int32", "versions": "0+", "entityType": "brokerId",
"about": "The broker id." },
// Version 0 of the protocol only allowed specifying a single host and
// port per broker, rather than an array of endpoints.
{ "name": "V0Host", "type": "string", "versions": "0", "ignorable": true,
"about": "The broker hostname." },
{ "name": "V0Port", "type": "int32", "versions": "0", "ignorable": true,
"about": "The broker port." },
{ "name": "Endpoints", "type": "[]UpdateMetadataEndpoint", "versions": "1+", "ignorable": true,
"about": "The broker endpoints.", "fields": [
{ "name": "Port", "type": "int32", "versions": "1+",
"about": "The port of this endpoint" },
{ "name": "Host", "type": "string", "versions": "1+",
"about": "The hostname of this endpoint" },
{ "name": "Listener", "type": "string", "versions": "3+", "ignorable": true,
"about": "The listener name." },
{ "name": "SecurityProtocol", "type": "int16", "versions": "1+",
"about": "The security protocol type." }
]},
{ "name": "Rack", "type": "string", "versions": "2+", "nullableVersions": "0+", "ignorable": true,
"about": "The rack which this broker belongs to." }
]}
],
"commonStructs": [
{ "name": "UpdateMetadataPartitionState", "versions": "0+", "fields": [
{ "name": "TopicName", "type": "string", "versions": "0-4", "entityType": "topicName", "ignorable": true,
"about": "In older versions of this RPC, the topic name." },
{ "name": "PartitionIndex", "type": "int32", "versions": "0+",
"about": "The partition index." },
{ "name": "ControllerEpoch", "type": "int32", "versions": "0+",
"about": "The controller epoch." },
{ "name": "Leader", "type": "int32", "versions": "0+", "entityType": "brokerId",
"about": "The ID of the broker which is the current partition leader." },
{ "name": "LeaderEpoch", "type": "int32", "versions": "0+",
"about": "The leader epoch of this partition." },
{ "name": "Isr", "type": "[]int32", "versions": "0+", "entityType": "brokerId",
"about": "The brokers which are in the ISR for this partition." },
{ "name": "ZkVersion", "type": "int32", "versions": "0+",
"about": "The Zookeeper version." },
{ "name": "Replicas", "type": "[]int32", "versions": "0+", "entityType": "brokerId",
"about": "All the replicas of this partition." },
{ "name": "OfflineReplicas", "type": "[]int32", "versions": "4+", "entityType": "brokerId", "ignorable": true,
"about": "The replicas of this partition which are offline." }
]}
]
}
