KIP-1109 — Unifying Kafka Consumer Topic Metrics

Accepted Kafka 4.1 ConsumerMetrics

Standardizes Kafka consumer topic-level metric names to use the original topic name (preserving dots) instead of replacing dots with underscores, aligning consumer metric naming with the existing producer convention. The current asymmetry between producer metrics (dots preserved) and consumer metrics (dots replaced by underscores) causes confusion and breaks monitoring dashboards that use unified naming.

Details