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https://issues.apache.org/jira/browse/KAFKA-15058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Divij Vaidya updated KAFKA-15058:
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Component/s: metrics
> Improve the accuracy of Histogram in client metric
> --------------------------------------------------
>
> Key: KAFKA-15058
> URL: https://issues.apache.org/jira/browse/KAFKA-15058
> Project: Kafka
> Issue Type: Improvement
> Components: clients, metrics
> Reporter: Jun Rao
> Priority: Major
>
> The Histogram type (org.apache.kafka.common.metrics.stats) in KafkaMetrics in
> the client module statically divides the value space into a fixed number of
> buckets and only returns values on the bucket boundary. So, the returned
> histogram value may never show up in a recorded value. Yammer Histogram, on
> the other hand, uses reservoir sampling. The reported value is always one of
> the recorded values, and is likely more accurate. Because of this, the
> Histogram type in client metric hasn't been used widely. It would be useful
> to improve Histogram in the client metric to be more accurate.
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