org.apache.nutch.indexer.field
Class BasicFields.Merger

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.nutch.indexer.field.BasicFields.Merger

All Implemented Interfaces:

Closeable, Configurable, JobConfigurable, Reducer<Text,FieldsWritable,Text,FieldsWritable>

Enclosing class:

BasicFields

public static class BasicFields.Merger
extends Configured
implements Reducer<Text,FieldsWritable,Text,FieldsWritable>

Merges output of all segments fields collecting only the most recent set of fields for any given url.

Constructor Summary

BasicFields.Merger()

Method Summary

void	close()
void	configure(JobConf conf) Configures the job.
void	reduce(Text key, Iterator<FieldsWritable> values, OutputCollector<Text,FieldsWritable> output, Reporter reporter) Collects the most recent set of fields for any url.

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

BasicFields.Merger

public BasicFields.Merger()

Method Detail

configure

public void configure(JobConf conf)

Configures the job.

Specified by:

configure in interface JobConfigurable

close

public void close()

Specified by:

close in interface Closeable

reduce

public void reduce(Text key,
                   Iterator<FieldsWritable> values,
                   OutputCollector<Text,FieldsWritable> output,
                   Reporter reporter)
            throws IOException

Collects the most recent set of fields for any url.

Specified by:

reduce in interface Reducer<Text,FieldsWritable,Text,FieldsWritable>

Throws:

IOException