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https://issues.apache.org/jira/browse/KAFKA-798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neha Narkhede resolved KAFKA-798.
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Resolution: Fixed
> Use biased histograms instead of uniform histograms in KafkaMetricsGroup
> ------------------------------------------------------------------------
>
> Key: KAFKA-798
> URL: https://issues.apache.org/jira/browse/KAFKA-798
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.8
> Reporter: Swapnil Ghike
> Assignee: Swapnil Ghike
> Priority: Blocker
> Labels: kafka-0.8, p1
> Fix For: 0.8
>
> Attachments: kafka-798.patch
>
>
> A biased histogram produces quantiles which are representative of (roughly)
> the last five minutes of data. On the other hand, a uniform histogram
> produces quantiles which are valid for the entirely of the histogram’s
> lifetime. More discussion at
> http://metrics.codahale.com/manual/core/#man-core-histograms-uniform
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