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

Class WindowedCount

java.lang.Object

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

org.apache.kafka.common.metrics.stats.WindowedSum

org.apache.kafka.common.metrics.stats.WindowedCount

All Implemented Interfaces:

Measurable, MeasurableStat, MetricValueProvider<Double>, Stat

public class WindowedCount
extends WindowedSum

A SampledStat that maintains a simple count of what it has seen. This is a special kind of WindowedSum that always records a value of 1 instead of the provided value. In other words, it counts the number of SampledStat.record(MetricConfig, double, long) invocations, instead of summing the recorded values. See also CumulativeCount for a non-sampled version of this metric.

Constructor Summary

Constructors

Constructor	Description
WindowedCount()

Method Summary

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

combine

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

WindowedCount

public WindowedCount()