KIP-105 — Addition of Record Level for Sensors

Accepted Metrics

Introduces a RecordingLevel (INFO vs DEBUG) per Sensor in Kafka's metrics framework and a metrics.recording.level client configuration to filter which sensors are active at runtime. Recording all metrics unconditionally imposed up to 50% CPU overhead in Kafka Streams microbenchmarks due to the cost of computing and storing fine-grained debug metrics in production.

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