Package org.apache.nutch.indexer

Class IndexerMapReduce

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.nutch.indexer.IndexerMapReduce

All Implemented Interfaces:

Configurable

public class IndexerMapReduce
extends Configured

This class is typically invoked from within IndexingJob and handles all MapReduce functionality required when undertaking indexing.

This is a consequence of one or more indexing plugins being invoked which extend IndexWriter.

See initMRJob(Path, Path, Collection, Job, boolean) for details on the specific data structures and parameters required for indexing.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	IndexerMapReduce.IndexerMapper
static class	IndexerMapReduce.IndexerReducer

Field Summary

Fields

Modifier and Type	Field	Description
static final String	INDEXER_BINARY_AS_BASE64
static final String	INDEXER_DELETE
static final String	INDEXER_DELETE_ROBOTS_NOINDEX
static final String	INDEXER_DELETE_SKIPPED
static final String	INDEXER_NO_COMMIT
static final String	INDEXER_PARAMS
static final String	INDEXER_SKIP_NOTMODIFIED
static final String	URL_FILTERING
static final String	URL_NORMALIZING

Constructor Summary

Constructors

Constructor	Description
IndexerMapReduce()

Method Summary

Modifier and Type	Method	Description
static void	initMRJob(Path crawlDb, Path linkDb, Collection<Path> segments, Job job, boolean addBinaryContent)

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

Field Details

INDEXER_PARAMS

public static final String INDEXER_PARAMS

See Also:

• Constant Field Values

INDEXER_DELETE

public static final String INDEXER_DELETE

See Also:

• Constant Field Values

INDEXER_NO_COMMIT

public static final String INDEXER_NO_COMMIT

See Also:

• Constant Field Values

INDEXER_DELETE_ROBOTS_NOINDEX

public static final String INDEXER_DELETE_ROBOTS_NOINDEX

See Also:

• Constant Field Values

INDEXER_DELETE_SKIPPED

public static final String INDEXER_DELETE_SKIPPED

See Also:

• Constant Field Values

INDEXER_SKIP_NOTMODIFIED

public static final String INDEXER_SKIP_NOTMODIFIED

See Also:

• Constant Field Values

URL_FILTERING

public static final String URL_FILTERING

See Also:

• Constant Field Values

URL_NORMALIZING

public static final String URL_NORMALIZING

See Also:

• Constant Field Values

INDEXER_BINARY_AS_BASE64

public static final String INDEXER_BINARY_AS_BASE64

See Also:

• Constant Field Values

Constructor Details

IndexerMapReduce

public IndexerMapReduce()

Method Details

initMRJob

public static void initMRJob(Path crawlDb,
 Path linkDb,
 Collection<Path> segments,
 Job job,
 boolean addBinaryContent)
                      throws IOException

Throws:

IOException