[KAFKA-798] Use biased histograms instead of uniform histograms in KafkaMetricsGroup

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.0
• Labels: kafka-0.8 p1
• Assignee: Swapnil Ghike
• Reporter: Swapnil Ghike
• Created: 09/Mar/13 01:19
• Updated: 11/Mar/13 18:05
• Resolved: 09/Mar/13 22:53

Description

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