Package org.apache.nutch.tools.arc

Class ArcSegmentCreator.ArcSegmentCreatorMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<Text,BytesWritable,Text,NutchWritable>

org.apache.nutch.tools.arc.ArcSegmentCreator.ArcSegmentCreatorMapper

Enclosing class:

ArcSegmentCreator

public static class ArcSegmentCreator.ArcSegmentCreatorMapper
extends Mapper<Text,BytesWritable,Text,NutchWritable>

Nested Class Summary

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

Mapper.Context

Field Summary

Fields

Modifier and Type	Field	Description
static final String	URL_VERSION

Constructor Summary

Constructors

Constructor	Description
ArcSegmentCreatorMapper()

Method Summary

Modifier and Type	Method	Description
void	map(Text key, BytesWritable bytes, Mapper<Text,BytesWritable,Text,NutchWritable>.Context context)	Runs the Map job to translate an arc record into output for Nutch segments.
void	setup(Mapper<Text,BytesWritable,Text,NutchWritable>.Context context)	Configures the job mapper.

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run

Methods inherited from class java.lang.Object

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

Field Details

URL_VERSION

public static final String URL_VERSION

See Also:

• Constant Field Values

Constructor Details

ArcSegmentCreatorMapper

public ArcSegmentCreatorMapper()

Method Details

setup

public void setup(Mapper<Text,BytesWritable,Text,NutchWritable>.Context context)

Configures the job mapper. Sets the url filters, scoring filters, url normalizers and other relevant data.

Overrides:

setup in class Mapper<Text,BytesWritable,Text,NutchWritable>

Parameters:

context - The task context.

map

public void map(Text key,
 BytesWritable bytes,
 Mapper<Text,BytesWritable,Text,NutchWritable>.Context context)
         throws IOException,
InterruptedException

Runs the Map job to translate an arc record into output for Nutch segments.

Overrides:

map in class Mapper<Text,BytesWritable,Text,NutchWritable>

Parameters:

key - The arc record header.

bytes - The arc record raw content bytes.

context - The context of the mapreduce job.

Throws:

IOException

InterruptedException