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1. kafka.controller:type=KafkaController,name=MetadataLastCommittedOffset 
   Reports the last committed offset consumed by the controller.
2. kafka.controller:type=KafkaController,name=MetadataWriteOffses
The active controller will report the offset of the latest write. Inactive controllers will report 0.
3. kafka.controller:type=KafkaController,name=MetadataLastCommittedTimestamp
   Reports the append time of the last committed record batch.
4. kafka.controller:type=KafkaController,name=MetadataLastCommittedLagMs
   Reports the difference between the local time and the append time of the last committed record batch.

Broker

1. kafka.server.metadata:type=BrokerMetadataPublisherbroker-metadata-metrics,name=MetadataLastCommittedOffsetlast-committed-offset 
2. kafka.server.metadata:type=BrokerMetadataPublisherbroker-metadata-metrics,name=MetadataLastCommittedTimestamplast-committed-timestamp 
3. kafka.server.metadata:type=BrokerMetadataPublisherbroker-metadata-metrics,name=MetadataLastCommittedLagMs last-committed-lag-ms

Configuration

1. metadata.monitor.write.interval.ms - The interval between writing NoopRecord to the cluster metadata log.

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