@InterfaceAudience.Public @InterfaceStability.Evolving

Package org.apache.hadoop.metrics2.lib

A collection of library classes for implementing metrics sources


Class Summary
Interns Helpers to create interned metrics info
MetricsRegistry An optional metrics registry class for creating and maintaining a collection of MetricsMutables, making writing metrics source easier.
MutableCounter The mutable counter (monotonically increasing) metric interface
MutableCounterInt A mutable int counter for implementing metrics sources
MutableCounterLong A mutable long counter
MutableGauge The mutable gauge metric interface
MutableGaugeInt A mutable int gauge
MutableGaugeLong A mutable long gauge
MutableMetric The mutable metric interface
MutableQuantiles Watches a stream of long values, maintaining online estimates of specific quantiles with provably low error bounds.
MutableRate A convenient mutable metric for throughput measurement
MutableRates Helper class to manage a group of mutable rate metrics
MutableStat A mutable metric with stats.

Enum Summary
DefaultMetricsSystem The default metrics system singleton

Package org.apache.hadoop.metrics2.lib Description

A collection of library classes for implementing metrics sources

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