common.metadata.ZkMigrationRecord.json Maven / Gradle / Ivy
// Licensed to the Apache Software Foundation (ASF) under one or more
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// 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,
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{
"apiKey": 21,
"type": "metadata",
"name": "ZkMigrationStateRecord",
// Version 0 adds ZkMigrationState which is used by the KRaft controller to mark the beginning and end
// of the ZK to KRaft migration.
//
// In 3.4, the defined values are: 0 (None), 1 (PreMigration), 2 (Migration), 3 (PostMigration).
// In 3.5, the values for PreMigration and Migration were swapped: 0 (None), 2 (PreMigration), 1 (Migration), 3 (PostMigration).
// This was done to work around the fact that we never wrote Migration or PostMigration records in 3.4
//
"validVersions": "0",
"flexibleVersions": "0+",
"fields": [
{ "name": "ZkMigrationState", "type": "int8", "versions": "0+",
"about": "One of the possible migration states." }
]
}