org.apache.nutch.crawl

Class DeduplicationJob.StatusUpdateReducer

java.lang.Object

org.apache.nutch.crawl.DeduplicationJob.StatusUpdateReducer

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.Text,CrawlDatum>

Enclosing class:

DeduplicationJob

public static class DeduplicationJob.StatusUpdateReducer
extends Object
implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.Text,CrawlDatum>

Combine multiple new entries for a url.

Constructor Summary

Constructors

Constructor and Description
DeduplicationJob.StatusUpdateReducer()

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	configure(org.apache.hadoop.mapred.JobConf job)
void	reduce(org.apache.hadoop.io.Text key, Iterator<CrawlDatum> values, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,CrawlDatum> output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class java.lang.Object

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

Constructor Detail

DeduplicationJob.StatusUpdateReducer

public DeduplicationJob.StatusUpdateReducer()

Method Detail

configure

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

Specified by:

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

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

reduce

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

Specified by:

reduce in interface org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.Text,CrawlDatum>

Throws:

IOException