org.apache.datasketches.hive.quantiles

Class GetPmfFromDoublesSketchUDF

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.datasketches.hive.quantiles.GetPmfFromDoublesSketchUDF

public class GetPmfFromDoublesSketchUDF
extends org.apache.hadoop.hive.ql.exec.UDF

Constructor Summary

Constructors

Constructor and Description
GetPmfFromDoublesSketchUDF()

Method Summary

Modifier and Type	Method and Description
List<Double>	evaluate(org.apache.hadoop.io.BytesWritable serializedSketch, Double... splitPoints) Returns a list of fractions (PMF) from a given sketch

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

GetPmfFromDoublesSketchUDF

public GetPmfFromDoublesSketchUDF()

Method Detail

evaluate

public List<Double> evaluate(org.apache.hadoop.io.BytesWritable serializedSketch,
                             Double... splitPoints)

Returns a list of fractions (PMF) from a given sketch

Parameters:

serializedSketch - serialized sketch

splitPoints - list of unique and monotonically increasing values

Returns:

list of fractions from 0 to 1