org.apache.nutch.host

Class HostDbUpdateReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<K1,V1,K2,V2>

org.apache.gora.mapreduce.GoraReducer<Text,WebPage,String,Host>

org.apache.nutch.host.HostDbUpdateReducer

public class HostDbUpdateReducer
extends org.apache.gora.mapreduce.GoraReducer<Text,WebPage,String,Host>

Combines all WebPages with the same host key to create a Host object, with some statistics.

Nested Class Summary

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

Reducer.Context

Constructor Summary

Constructors

Constructor and Description
HostDbUpdateReducer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	reduce(Text key, Iterable<WebPage> values, Reducer.Context context)

Methods inherited from class org.apache.gora.mapreduce.GoraReducer

initReducerJob, initReducerJob, initReducerJob

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

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

HostDbUpdateReducer

public HostDbUpdateReducer()

Method Detail

reduce

protected void reduce(Text key,
          Iterable<WebPage> values,
          Reducer.Context context)
               throws IOException,
                      InterruptedException

Overrides:

reduce in class Reducer<Text,WebPage,String,Host>

Throws:

IOException

InterruptedException