LeaderAndIsrRequest¶

LeaderAndIsrRequest is a controller request with LeaderAndIsr API key and the following properties:

• Version
• Controller ID (broker.id of the controller broker)
• Controller Epoch
• Broker Epoch
• PartitionStates by TopicPartition (Map<TopicPartition, PartitionState>)
• Topic IDs
• Live leaders

LeaderAndIsrRequest is created (using LeaderAndIsrRequest.Builder) when:

• AbstractRequest is requested to parse a request (with the LeaderAndIsr API key)
• LeaderAndIsrRequest is requested to parse a byte buffer
• LeaderAndIsrRequest.Builder is requested to build a LeaderAndIsrRequest (when ControllerBrokerRequestBatch is requested to sendRequestsToBrokers)

LeaderAndIsrRequest.Builder¶

LeaderAndIsrRequest comes with a concrete AbstractRequest.Builder factory object that can build a LeaderAndIsrRequest.

LeaderAndIsrRequest.Builder is used when:

• AbstractControllerBrokerRequestBatch is requested to send out LeaderAndIsr requests to leader and follower brokers