org.apache.hadoop.hive.ql.udf

Class UDAFPercentile

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDAF

org.apache.hadoop.hive.ql.udf.UDAFPercentile

public class UDAFPercentile
extends UDAF

UDAF for calculating the percentile values. There are several definitions of percentile, and we take the method recommended by NIST.

See Also:

Percentile references

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	UDAFPercentile.MyComparator A comparator to sort the entries in order.
static class	UDAFPercentile.PercentileLongArrayEvaluator The evaluator for percentile computation based on long for an array of percentiles.
static class	UDAFPercentile.PercentileLongEvaluator The evaluator for percentile computation based on long.
static class	UDAFPercentile.State A state class to store intermediate aggregation results.

Constructor Summary

Constructors

Constructor and Description
UDAFPercentile()

Method Summary

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

getResolver, setResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

UDAFPercentile

public UDAFPercentile()