Package 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
    Description
    private final 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 final long
    value
    Value of the sampled item (e.g.

  • Constructor Summary

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

  • Method Summary

    Modifier and Type
    Method
    Description
    String
    toString()
     

    Methods inherited from class java.lang.Object

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

  • Field Details

    • 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 Details

    • SampleItem

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

  • Method Details