[CASSANDRA-8662] Switch cfhistograms from using yammer metrics in 2.1

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.1.3
• Assignee: Chris Lohfink
• Reporter: Chris Lohfink

Authors

Chris Lohfink

Reviewers

Aleksey Yeschenko

• Created: 21/Jan/15 16:53
• Updated: 16/Apr/19 09:31
• Resolved: 22/Jan/15 15:43

Description

cfhistograms was changed to use the yammer histograms CASSANDRA-5871. Until CASSANDRA-5657's change to metrics we shouldn't represent the yammer histogram for latency metrics. Yammer's histogram is based on assumption of a normal distribution and is bad at representing the tail percentiles with skewed distributions. So revert the change just in the 2.1 branch but leave it for 3.0.