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1. kafka.server:type=broker-metadata-metrics,name=last-applied-record-offset
   Reports the offset of the last record consumed by the broker.
2. kafka.server:type=broker-metadata-metrics,name=last-applied-record-timestamp 
3. kafka.server:type=broker-metadata-metrics,name=last-applied-record-lag-ms
4. kafka.server:type=broker-metadata-metrics,name=load-processing-time-us-avg
5. kafka.server:type=broker-metadata-metrics,name=load-processing-time-us-max
6. kafka.server:type=broker-metadata-metrics,name=batch-size-avg
7. kafka.server:type=broker-metadata-metrics,name=batch-size-max

Configuration

1. metadata.max.idle.interval.ms - The interval between writing NoOpRecord to the cluster metadata log. The default for this value is 500 ms.

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