org.apache.nutch.crawl

Class CrawlDbReader.CrawlDbTopNMapper

java.lang.Object

org.apache.nutch.crawl.CrawlDbReader.CrawlDbTopNMapper

All Implemented Interfaces:

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

Enclosing class:

CrawlDbReader

public static class CrawlDbReader.CrawlDbTopNMapper
extends Object
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.FloatWritable,org.apache.hadoop.io.Text>

Constructor Summary

Constructors

Constructor and Description
CrawlDbReader.CrawlDbTopNMapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	configure(org.apache.hadoop.mapred.JobConf job)
void	map(org.apache.hadoop.io.Text key, CrawlDatum value, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.FloatWritable,org.apache.hadoop.io.Text> 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

CrawlDbReader.CrawlDbTopNMapper

public CrawlDbReader.CrawlDbTopNMapper()

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

map

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

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.FloatWritable,org.apache.hadoop.io.Text>

Throws:

IOException