Package org.apache.kafka.common.metrics.stats

Class ExponentialWeightedAvg

java.lang.Object

org.apache.kafka.common.metrics.stats.SampledStat

org.apache.kafka.common.metrics.stats.Avg

org.apache.kafka.common.metrics.stats.ExponentialWeightedAvg

All Implemented Interfaces:

Measurable, MeasurableStat, MetricValueProvider<Double>, Stat

public class ExponentialWeightedAvg
extends Avg

A SampledStat that maintains an exponentially weighted average over its samples. This is the same as an Exponential Moving Average for a fixed sample set

Constructor Summary

Constructors

Constructor	Description
ExponentialWeightedAvg(double alpha)

Method Summary

Modifier and Type	Method	Description
double	combine(List<org.apache.kafka.common.metrics.stats.SampledStat.Sample> samples, MetricConfig config, long now)

Methods inherited from class org.apache.kafka.common.metrics.stats.SampledStat

current, measure, oldest, record, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

ExponentialWeightedAvg

public ExponentialWeightedAvg(double alpha)

Method Details

combine

public double combine(List<org.apache.kafka.common.metrics.stats.SampledStat.Sample> samples,
 MetricConfig config,
 long now)

Overrides:

combine in class Avg