Package org.apache.nutch.scoring.webgraph

Class ScoreUpdater.ScoreUpdaterReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<Text,ObjectWritable,Text,CrawlDatum>

org.apache.nutch.scoring.webgraph.ScoreUpdater.ScoreUpdaterReducer

Enclosing class:

ScoreUpdater

public static class ScoreUpdater.ScoreUpdaterReducer
extends Reducer<Text,ObjectWritable,Text,CrawlDatum>

Creates new CrawlDatum objects with the updated score from the NodeDb or with a cleared score.

Nested Class Summary

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

Reducer.Context

Constructor Summary

Constructors

Constructor	Description
ScoreUpdaterReducer()

Method Summary

Modifier and Type	Method	Description
void	reduce(Text key, Iterable<ObjectWritable> values, Reducer<Text,ObjectWritable,Text,CrawlDatum>.Context context)
void	setup(Reducer<Text,ObjectWritable,Text,CrawlDatum>.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 Details

ScoreUpdaterReducer

public ScoreUpdaterReducer()

Method Details

setup

public void setup(Reducer<Text,ObjectWritable,Text,CrawlDatum>.Context context)

Overrides:

setup in class Reducer<Text,ObjectWritable,Text,CrawlDatum>

reduce

public void reduce(Text key,
 Iterable<ObjectWritable> values,
 Reducer<Text,ObjectWritable,Text,CrawlDatum>.Context context)
            throws IOException,
InterruptedException

Overrides:

reduce in class Reducer<Text,ObjectWritable,Text,CrawlDatum>

Throws:

IOException

InterruptedException