org.apache.hadoop.metrics2.util

Class MetricSampleQuantiles.SampleItem

java.lang.Object

org.apache.hadoop.metrics2.util.MetricSampleQuantiles.SampleItem

Enclosing class:

MetricSampleQuantiles

private static class MetricSampleQuantiles.SampleItem
extends Object

Describes a measured value passed to the estimator, tracking additional metadata required by the CKMS algorithm.

Field Summary

Fields

Modifier and Type	Field and Description
private int	delta Difference between the item's greatest possible rank and lowest possible rank.
private int	g Difference between the lowest possible rank of the previous item, and the lowest possible rank of this item.
private long	value Value of the sampled item (e.g.

Constructor Summary

Constructors

Constructor and Description
SampleItem(long value, int lowerDelta, int delta)

Method Summary

Modifier and Type	Method and Description
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

value

private final long value

Value of the sampled item (e.g. a measured latency value)

g

private int g

Difference between the lowest possible rank of the previous item, and the lowest possible rank of this item. The sum of the g of all previous items yields this item's lower bound.

delta

private final int delta

Difference between the item's greatest possible rank and lowest possible rank.

Constructor Detail

SampleItem

public SampleItem(long value,
                  int lowerDelta,
                  int delta)

Method Detail

toString

public String toString()

Overrides:

toString in class Object