org.apache.hadoop.metrics2.lib

Class MetricMutableHistogram

java.lang.Object

org.apache.hadoop.metrics2.lib.MetricMutable

org.apache.hadoop.metrics2.lib.MetricMutableHistogram

All Implemented Interfaces:

MetricHistogram

public class MetricMutableHistogram
extends org.apache.hadoop.metrics2.lib.MetricMutable
implements MetricHistogram

A histogram implementation that runs in constant space, and exports to hadoop's metrics2 system.

Field Summary

Fields inherited from class org.apache.hadoop.metrics2.lib.MetricMutable

description, name

Fields inherited from interface org.apache.hadoop.metrics2.MetricHistogram

MAX_METRIC_NAME, MEAN_METRIC_NAME, MEDIAN_METRIC_NAME, MIN_METRIC_NAME, NINETY_FIFTH_PERCENTILE_METRIC_NAME, NINETY_NINETH_PERCENTILE_METRIC_NAME, NUM_OPS_METRIC_NAME, SEVENTY_FIFTH_PERCENTILE_METRIC_NAME

Constructor Summary

Constructors

Constructor and Description
MetricMutableHistogram(String name, String description)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(long val) Add a single value to a histogram's stream of values.
long	getMax()
double	getMean()
long	getMin()
void	snapshot(org.apache.hadoop.metrics2.MetricsRecordBuilder metricsRecordBuilder, boolean all)

Methods inherited from class org.apache.hadoop.metrics2.lib.MetricMutable

changed, clearChanged, setChanged, snapshot

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetricMutableHistogram

public MetricMutableHistogram(String name,
                      String description)

Method Detail

add

public void add(long val)

Description copied from interface: MetricHistogram

Add a single value to a histogram's stream of values.

Specified by:

add in interface MetricHistogram

getMax

public long getMax()

getMin

public long getMin()

getMean

public double getMean()

snapshot

public void snapshot(org.apache.hadoop.metrics2.MetricsRecordBuilder metricsRecordBuilder,
            boolean all)

Specified by:

snapshot in class org.apache.hadoop.metrics2.lib.MetricMutable