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changes.mady.by.user Jason Gustafson

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The metadata response will be extended to include the leader epoch. This enables stronger fencing for consumers. We can enable similar protection in producers in the future, but that is out of the scope of this KIP.

Code Block
linenumberstrue
MetadataResponse => Brokers ClusterId ControllerId [TopicMetadata]
  Brokers => [MetadataBroker]
  ClusterId => NULLABLE_STRING
  ControllerId => INT32
  
TopicMetadata => ErrorCode TopicName IsInternal [PartitionMetadata]
  ErrorCode => INT16
  TopicName => STRING
  IsInternal => BOOLEAN
  
PartitionMetadata => ErrorCode PartitionId Leader LeaderEpoch Replicas ISR OfflineReplicas
  ErrorCode => INT16
  PartitionId => INT32
  Leader => INT32
  LeaderEpoch => INT32 // New
  Replicas => [INT32]
  ISR => [INT32]
  OfflineReplicas => [INT32]

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