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{
  "apiKey": 56,
  "type": "request",
  "listeners": ["zkBroker", "controller"],
  "name": "AlterPartitionRequest",
  "validVersions": "0-2",
  "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": "Topics", "type": "[]TopicData", "versions": "0+", "fields": [
      { "name": "TopicName", "type": "string", "versions": "0-1", "ignorable": true, "entityType": "topicName",
        "about": "The name of the topic to alter ISRs for" },
      { "name": "TopicId", "type": "uuid", "versions": "2+", "ignorable": true,
        "about": "The ID of the topic to alter ISRs for" },
      { "name": "Partitions", "type": "[]PartitionData", "versions": "0+", "fields": [
        { "name": "PartitionIndex", "type": "int32", "versions": "0+",
          "about": "The partition index" },
        { "name": "LeaderEpoch", "type": "int32", "versions": "0+",
          "about": "The leader epoch of this partition" },
// Old Field deprecated.
        { "name": "NewIsr", "type": "[]int32", "versions": "0-2", "entityType": "brokerId",
          "about": "The ISR for this partition" },
// Old Field deprecated.
// New Field begin
        { "name": "NewIsrWithEpochs", "type": "[]BrokerState", "versions": "3+", "fields": [
            { "name": "BrokerId", "type": "int32", "versions": "3+", "entityType": "brokerId",
              "about": "The ID of the broker." },
        	{ "name": "BrokerEpoch", "type": "int64", "versions": "3+",
              "about": "The epoch of the broker. It will be -1 if the epoch check is not supported." },
         ]},
// New Field End
        { "name": "LeaderRecoveryState", "type": "int8", "versions": "1+", "default": "0",
          "about": "1 if the partition is recovering from an unclean leader election; 0 otherwise." },
        { "name": "PartitionEpoch", "type": "int32", "versions": "0+",
          "about": "The expected epoch of the partition which is being updated. For legacy cluster this is the ZkVersion in the LeaderAndIsr request." }
      ]}
    ]}
  ]
}