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https://issues.apache.org/jira/browse/CASSANDRA-8662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14286105#comment-14286105
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Chris Lohfink commented on CASSANDRA-8662:
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In attached patch the output would be the same, just changing from backing it
with the Histogram to using the EstimatedHistogram (which 2 of the 5 metrics
used anyway).
> Switch cfhistograms from using yammer metrics in 2.1
> ----------------------------------------------------
>
> Key: CASSANDRA-8662
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8662
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Chris Lohfink
> Assignee: Chris Lohfink
> Fix For: 2.1.3
>
> Attachments: CASSANDRA-8662v1.txt
>
>
> 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.
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