org.apache.nutch.scoring.webgraph

Class Loops.Finalizer

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.nutch.scoring.webgraph.Loops.Finalizer

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.conf.Configurable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.Route>, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.LoopSet>

Enclosing class:

Loops

public static class Loops.Finalizer
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.Route>, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.LoopSet>

Finishes the Loops job by aggregating and collecting and found routes.

Constructor Summary

Constructors

Constructor and Description
Loops.Finalizer() Default constructor.
Loops.Finalizer(org.apache.hadoop.conf.Configuration conf) Configurable constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	configure(org.apache.hadoop.mapred.JobConf conf) Configures the job.
void	map(org.apache.hadoop.io.Text key, Loops.Route value, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,Loops.Route> output, org.apache.hadoop.mapred.Reporter reporter) Maps out and found routes, those will be the link cycles.
void	reduce(org.apache.hadoop.io.Text key, Iterator<Loops.Route> values, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,Loops.LoopSet> output, org.apache.hadoop.mapred.Reporter reporter) Aggregates all found routes for a given start url into a loopset and collects the loopset.

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

Constructor Detail

Loops.Finalizer

public Loops.Finalizer()

Default constructor.

Loops.Finalizer

public Loops.Finalizer(org.apache.hadoop.conf.Configuration conf)

Configurable constructor.

Method Detail

configure

public void configure(org.apache.hadoop.mapred.JobConf conf)

Configures the job.

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable

map

public void map(org.apache.hadoop.io.Text key,
       Loops.Route value,
       org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,Loops.Route> output,
       org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Maps out and found routes, those will be the link cycles.

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.Route>

Throws:

IOException

reduce

public void reduce(org.apache.hadoop.io.Text key,
          Iterator<Loops.Route> values,
          org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,Loops.LoopSet> output,
          org.apache.hadoop.mapred.Reporter reporter)
            throws IOException

Aggregates all found routes for a given start url into a loopset and collects the loopset.

Specified by:

reduce in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,Loops.Route,org.apache.hadoop.io.Text,Loops.LoopSet>

Throws:

IOException

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable