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From "Chris Lohfink (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-13642) Expose recent histograms in JmxHistograms
Date Tue, 27 Jun 2017 19:07:00 GMT
Chris Lohfink created CASSANDRA-13642:

             Summary: Expose recent histograms in JmxHistograms
                 Key: CASSANDRA-13642
             Project: Cassandra
          Issue Type: Improvement
          Components: Observability
            Reporter: Chris Lohfink
            Assignee: Chris Lohfink

For monitoring tools that were written for the recent*Histograms the current decaying and
all time values exposed by the JmxHistograms is not consumable. We can add a new attribute
(easier with some tooling than operations to read) to expose it just like in storage service

Should additionally make it so this attribute only stores previous values if read, so that
it does not add any additional memory cost to C* unless used since we already storing 2 versions
of histogram for the decaying/alltime views.

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