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org.apache.kafka.common.metrics.stats.Rate will be converted to a CompoundStat similar to Percentiles, with two metrics: rate and total (e.g. request-rate and request-total). For consistency, metrics like io-wait-ratio which specify time ratio will also have two attributes (e.g. io-wait-ratio and io-wait-time-total).

Example:

metricName = metrics.metricName("request-rate", metricGrpName, "The average number of requests sent per second.", metricTags);
totalMetricName = metrics.metricName("request-total", metricGrpName, "The total number of requests sent.", metricTags);
this.bytesSent.add(new Rate(new Count(), metricName, totalMetricName));

Compatibility, Deprecation, and Migration Plan

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