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

java.lang.Object
  org.apache.hadoop.hive.ql.udf.UDAFPercentile.PercentileLongEvaluator

All Implemented Interfaces:

UDAFEvaluator

Enclosing class:

UDAFPercentile

public static class UDAFPercentile.PercentileLongEvaluator
extends Object
implements UDAFEvaluator

The evaluator for percentile computation based on long.

Constructor Summary

UDAFPercentile.PercentileLongEvaluator()

Method Summary

void	init() Initializer.
boolean	iterate(org.apache.hadoop.io.LongWritable o, Double percentile) Note that percentile can be null in a global aggregation with 0 input rows: "select percentile(col, 0.5) from t where false" In that case, iterate(null, null) will be called once.
boolean	merge(UDAFPercentile.State other)
DoubleWritable	terminate()
UDAFPercentile.State	terminatePartial()

Methods inherited from class java.lang.Object

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

Constructor Detail

UDAFPercentile.PercentileLongEvaluator

public UDAFPercentile.PercentileLongEvaluator()

Method Detail

init

public void init()

Description copied from interface: UDAFEvaluator

Initializer. Initializes the state for the evaluator.

Specified by:

init in interface UDAFEvaluator

iterate

public boolean iterate(org.apache.hadoop.io.LongWritable o,
                       Double percentile)

Note that percentile can be null in a global aggregation with 0 input rows: "select percentile(col, 0.5) from t where false" In that case, iterate(null, null) will be called once.

terminatePartial

public UDAFPercentile.State terminatePartial()

merge

public boolean merge(UDAFPercentile.State other)

terminate

public DoubleWritable terminate()