org.apache.nutch.scoring.webgraph

Class ScoreUpdater

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.nutch.scoring.webgraph.ScoreUpdater

All Implemented Interfaces:

Configurable, Tool

public class ScoreUpdater
extends Configured
implements Tool

Updates the score from the WebGraph node database into the crawl database. Any score that is not in the node database is set to the clear score in the crawl database.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ScoreUpdater.ScoreUpdaterMapper Changes input into ObjectWritables.
static class	ScoreUpdater.ScoreUpdaterReducer Creates new CrawlDatum objects with the updated score from the NodeDb or with a cleared score.

Constructor Summary

Constructors

Constructor and Description
ScoreUpdater()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] args)
int	run(java.lang.String[] args) Runs the ScoreUpdater tool.
void	update(Path crawlDb, Path webGraphDb) Updates the inlink score in the web graph node databsae into the crawl database.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

ScoreUpdater

public ScoreUpdater()

Method Detail

update

public void update(Path crawlDb,
                   Path webGraphDb)
            throws java.io.IOException,
                   java.lang.ClassNotFoundException,
                   java.lang.InterruptedException

Updates the inlink score in the web graph node databsae into the crawl database.

Parameters:

crawlDb - The crawl database to update

webGraphDb - The webgraph database to use.

Throws:

java.io.IOException - If an error occurs while updating the scores.

java.lang.ClassNotFoundException

java.lang.InterruptedException

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception

run

public int run(java.lang.String[] args)
        throws java.lang.Exception

Runs the ScoreUpdater tool.

Specified by:

run in interface Tool

Throws:

java.lang.Exception