Package org.apache.flink.runtime.metrics

Class DescriptiveStatisticsHistogramStatistics

java.lang.Object

org.apache.flink.metrics.HistogramStatistics

org.apache.flink.runtime.metrics.DescriptiveStatisticsHistogramStatistics

All Implemented Interfaces:

Serializable

public class DescriptiveStatisticsHistogramStatistics
extends HistogramStatistics
implements Serializable

DescriptiveStatistics histogram statistics implementation returned by DescriptiveStatisticsHistogram.

The statistics takes a point-in-time snapshot of a DescriptiveStatistics instance and allows optimised metrics retrieval from this.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
DescriptiveStatisticsHistogramStatistics(double[] values)
DescriptiveStatisticsHistogramStatistics(org.apache.flink.runtime.metrics.DescriptiveStatisticsHistogram.CircularDoubleArray histogramValues)

Method Summary

Modifier and Type	Method	Description
long	getMax()	Returns the maximum value of the histogram.
double	getMean()	Returns the mean of the histogram values.
long	getMin()	Returns the minimum value of the histogram.
double	getQuantile(double quantile)	Returns the value for the given quantile based on the represented histogram statistics.
double	getStdDev()	Returns the standard deviation of the distribution reflected by the histogram statistics.
long[]	getValues()	Returns the elements of the statistics' sample.
int	size()	Returns the size of the statistics' sample.

Methods inherited from class java.lang.Object

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

Constructor Detail

DescriptiveStatisticsHistogramStatistics

public DescriptiveStatisticsHistogramStatistics(org.apache.flink.runtime.metrics.DescriptiveStatisticsHistogram.CircularDoubleArray histogramValues)

DescriptiveStatisticsHistogramStatistics

public DescriptiveStatisticsHistogramStatistics(double[] values)

Method Detail

getQuantile

public double getQuantile(double quantile)

Description copied from class: HistogramStatistics

Returns the value for the given quantile based on the represented histogram statistics.

Specified by:

getQuantile in class HistogramStatistics

Parameters:

quantile - Quantile to calculate the value for

Returns:

Value for the given quantile

getValues

public long[] getValues()

Description copied from class: HistogramStatistics

Returns the elements of the statistics' sample.

Specified by:

getValues in class HistogramStatistics

Returns:

Elements of the statistics' sample

size

public int size()

Description copied from class: HistogramStatistics

Returns the size of the statistics' sample.

Specified by:

size in class HistogramStatistics

Returns:

Size of the statistics' sample

getMean

public double getMean()

Description copied from class: HistogramStatistics

Returns the mean of the histogram values.

Specified by:

getMean in class HistogramStatistics

Returns:

Mean of the histogram values

getStdDev

public double getStdDev()

Description copied from class: HistogramStatistics

Returns the standard deviation of the distribution reflected by the histogram statistics.

Specified by:

getStdDev in class HistogramStatistics

Returns:

Standard deviation of histogram distribution

getMax

public long getMax()

Description copied from class: HistogramStatistics

Returns the maximum value of the histogram.

Specified by:

getMax in class HistogramStatistics

Returns:

Maximum value of the histogram

getMin

public long getMin()

Description copied from class: HistogramStatistics

Returns the minimum value of the histogram.

Specified by:

getMin in class HistogramStatistics

Returns:

Minimum value of the histogram