[ZOOKEEPER-2979] Use dropwizard library histogram for proposal-related metrics

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Component/s: server
• Labels: pull-request-available
• Assignee: Andor Molnar
• Reporter: Andor Molnar
• Created: 12/Feb/18 15:09
• Updated: 08/Oct/18 12:53
• Resolved: 02/Oct/18 09:38

Description

This Jira in intended to be the successor of ZOOKEEPER-2939.

By using dropwizard library's Histogram component we'll be able to provide more sophisticated statistics on Proposal sizes.

From the docs:
"A histogram measures the statistical distribution of values in a stream of data. In addition to minimum, maximum, mean, etc., it also measures median, 75th, 90th, 95th, 98th, 99th, and 99.9th percentiles."

http://metrics.dropwizard.io/3.1.0/manual/core/#histograms

Issue Links

• links to: GitHub Pull Request #440