Brandon Wilson 2013-03-01, 14:26
-Re: Computations behind JMX Metrics
Eric Newton 2013-03-01, 14:35
Yes, the average metrics obtained via JMX are exponentially smoothed.
You can get more accurate counters via a thrift call to the master, and you
can trace specific calls to get fine-grained time information for all parts
of a specific transaction.
On Fri, Mar 1, 2013 at 9:26 AM, Brandon Wilson <[EMAIL PROTECTED]
> I have a question regarding the JMX metrics exposed by Accumulo. I believe
> the metrics that are reported as averages (e.g., ScanAvgTime) are computed
> as weighted averages over all time, as opposed to a arithmetic mean of a
> set of scan times over a given time window. Am I correct that the weighted
> average calculation is actual the weighted average since the tserver
> The average formula I suspect is being use is here:
> Am I on the right track here?