oracle.spatial.hadoop.vector.mapred

Class HierarchicalCountReducer

java.lang.Object

MapReduceBase

oracle.spatial.hadoop.vector.mapred.HierarchicalCountReducer

public class HierarchicalCountReducer
extends MapReduceBase

A reducer that takes the output generated by SpatialHierarchicalCountMapper and creates a different output for each hierarchy level. MultipleOutputs must have been configured for each hierarchy level using the layer's name as output name.

Author:

hsaucedo

Constructor Summary

Constructors

Constructor and Description
HierarchicalCountReducer()

Method Summary

Modifier and Type	Method and Description
void	close()
void	configure(JobConf conf)
void	reduce(Text key, java.util.Iterator<LongWritable> values, <any> output, Reporter reporter)

Methods inherited from class java.lang.Object

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

Constructor Detail

HierarchicalCountReducer

public HierarchicalCountReducer()

Method Detail

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

configure

public void configure(JobConf conf)

reduce

public void reduce(Text key,
                   java.util.Iterator<LongWritable> values,
                   <any> output,
                   Reporter reporter)
            throws java.io.IOException

Throws:

java.io.IOException