ConsumerGroupMetadataValue.json

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//    http://www.apache.org/licenses/LICENSE-2.0
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{
  "apiKey": 3,
  "type": "coordinator-value",
  "name": "ConsumerGroupMetadataValue",
  "validVersions": "0",
  "flexibleVersions": "0+",
  "fields": [
    { "name": "Epoch", "versions": "0+", "type": "int32",
      "about": "The group epoch." },
    // The MetadataHash is added in 4.1 (KIP-1101). It's used to track
    // subscribed topics in the group. When subscribed topics change,
    // like partition count or rack change, the hash will be different.
    // It indicates that the group should be rebalanced.
    { "name": "MetadataHash", "versions": "0+", "type": "int64",
      "default": 0, "taggedVersions": "0+", "tag": 0,
      "about": "The hash of all topics in the group." }
  ]
}