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Provide a way to reset timers on endpoints without requiring a service restart #19

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schlosna opened this issue May 11, 2017 · 3 comments
Open

Provide a way to reset timers on endpoints without requiring a service restart #19

schlosna opened this issue May 11, 2017 · 3 comments

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@schlosna
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It'd be nice to have an admin task that allows for the reset of all timers. AFAIK currently the only way to do this is to bounce the service.
@schlosna
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Might be able to expose the HdrHistogramResetOnSnapshotReservoir which is "a reservoir that resets its internal state on each snapshot (which is how reporters get information from reservoirs)"

See also dropwizard/metrics#143 and http://taint.org/2014/01/16/145944a.html

@schlosna
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Going to close this out for now as I am not sure we want to snapshot everytime due to overhead and potential misuse via things like JMX monitors causing many snapshots during monitoring. See https://issues.apache.org/jira/browse/CASSANDRA-11752 for some background.

@schlosna
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Also see https://github.com/vladimir-bukhtoyarov/metrics-core-hdr

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@schlosna