oracle.spatial.hadoop.vector.partition.mapreduce

Class HilbertValueReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<HilbertValueGroup,RecordInfo,org.apache.hadoop.io.LongWritable,PointWritable>

oracle.spatial.hadoop.vector.partition.mapreduce.HilbertValueReducer

public class HilbertValueReducer
extends org.apache.hadoop.mapreduce.Reducer<HilbertValueGroup,RecordInfo,org.apache.hadoop.io.LongWritable,PointWritable>

Generates a sorted list of hilbert-value/point pairs.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
HilbertValueReducer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	reduce(HilbertValueGroup key, java.lang.Iterable<RecordInfo> values, org.apache.hadoop.mapreduce.Reducer.Context context)
protected void	setup(org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

HilbertValueReducer

public HilbertValueReducer()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Reducer.Context context)
              throws java.io.IOException,
                     java.lang.InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Reducer<HilbertValueGroup,RecordInfo,org.apache.hadoop.io.LongWritable,PointWritable>

Throws:

java.io.IOException

java.lang.InterruptedException

reduce

protected void reduce(HilbertValueGroup key,
          java.lang.Iterable<RecordInfo> values,
          org.apache.hadoop.mapreduce.Reducer.Context context)
               throws java.io.IOException,
                      java.lang.InterruptedException

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<HilbertValueGroup,RecordInfo,org.apache.hadoop.io.LongWritable,PointWritable>

Throws:

java.io.IOException

java.lang.InterruptedException