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Posted to commits@cassandra.apache.org by "Chris Lohfink (JIRA)" <ji...@apache.org> on 2015/01/15 17:22:35 UTC

[jira] [Created] (CASSANDRA-8627) Support Total/Recent latency histogram metrics for range slices

Chris Lohfink created CASSANDRA-8627:
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             Summary: Support Total/Recent latency histogram metrics for range slices
                 Key: CASSANDRA-8627
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8627
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Chris Lohfink


The Metrics histogram is pretty bad at non-normal data like latencies and (empirically tested and theoretically) is untrustworthy at 99th percentile. For applications that care about the percentiles having the more statistically accurate version is beneficial.  Adding the deprecated methods like other latency histograms for CASSANDRA-7338 temporarily would help.

This is just for 2.1 branch. CASSANDRA-5657 solves everything in 3.0.



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