org.apache.hadoop.metrics2.lib

Class MutableRangeHistogram

java.lang.Object

org.apache.hadoop.metrics2.lib.MutableMetric

org.apache.hadoop.metrics2.lib.MutableHistogram

org.apache.hadoop.metrics2.lib.MutableRangeHistogram

All Implemented Interfaces:

MetricHistogram

Direct Known Subclasses:

MutableSizeHistogram, MutableTimeHistogram

@InterfaceAudience.Private
public abstract class MutableRangeHistogram
extends MutableHistogram
implements MetricHistogram

Extended histogram implementation with metric range counters.

Field Summary

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

desc, histogram, name

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

MAX_METRIC_NAME, MEAN_METRIC_NAME, MEDIAN_METRIC_NAME, MIN_METRIC_NAME, NINETIETH_PERCENTILE_METRIC_NAME, NINETY_EIGHTH_PERCENTILE_METRIC_NAME, NINETY_FIFTH_PERCENTILE_METRIC_NAME, NINETY_NINE_POINT_NINETH_PERCENTILE_METRIC_NAME, NINETY_NINETH_PERCENTILE_METRIC_NAME, NUM_OPS_METRIC_NAME, SEVENTY_FIFTH_PERCENTILE_METRIC_NAME, TWENTY_FIFTH_PERCENTILE_METRIC_NAME

Constructor Summary

Constructors

Constructor and Description
MutableRangeHistogram(org.apache.hadoop.metrics2.MetricsInfo info)
MutableRangeHistogram(String name, String description)

Method Summary

Modifier and Type	Method and Description
long	getCount() Return the total number of values added to the histogram.
abstract long[]	getRanges() Returns the ranges to be counted
abstract String	getRangeType() Returns the type of range histogram size or time
void	snapshot(org.apache.hadoop.metrics2.MetricsRecordBuilder metricsRecordBuilder, boolean all)
void	updateSnapshotRangeMetrics(org.apache.hadoop.metrics2.MetricsRecordBuilder metricsRecordBuilder, Snapshot snapshot)

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

add, getMax, snapshot, updateSnapshotMetrics

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

changed, clearChanged, setChanged, snapshot

Methods inherited from class java.lang.Object

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

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

add

Constructor Detail

MutableRangeHistogram

public MutableRangeHistogram(org.apache.hadoop.metrics2.MetricsInfo info)

MutableRangeHistogram

public MutableRangeHistogram(String name,
                             String description)

Method Detail

getRangeType

public abstract String getRangeType()

Returns the type of range histogram size or time

getRanges

public abstract long[] getRanges()

Returns the ranges to be counted

snapshot

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

Overrides:

snapshot in class MutableHistogram

updateSnapshotRangeMetrics

public void updateSnapshotRangeMetrics(org.apache.hadoop.metrics2.MetricsRecordBuilder metricsRecordBuilder,
                                       Snapshot snapshot)

getCount

public long getCount()

Description copied from interface: MetricHistogram

Return the total number of values added to the histogram.

Specified by:

getCount in interface MetricHistogram

Overrides:

getCount in class MutableHistogram

Returns:

the total number of values.