Class CrawlDbMerger.Merger

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org.apache.nutch.crawl

java.lang.Object
- org.apache.hadoop.mapred.MapReduceBase
- org.apache.nutch.crawl.CrawlDbMerger.Merger

- All Implemented Interfaces:
- Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Reducer
- Enclosing class:
- CrawlDbMerger

public static class CrawlDbMerger.Merger
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.Text,CrawlDatum,org.apache.hadoop.io.Text,CrawlDatum>

Constructor Summary

Constructors Constructor and Description CrawlDbMerger.Merger()

Method Summary

Methods Modifier and Type Method and Description void close() void configure(org.apache.hadoop.mapred.JobConf conf) void reduce(org.apache.hadoop.io.Text key, Iterator values, org.apache.hadoop.mapred.OutputCollector 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

CrawlDbMerger.Merger

public CrawlDbMerger.Merger()

Method Detail

close

public void close()
           throws IOException

  - Specified by: 
  - <code>close</code> in interface <code>Closeable</code> 
  - Specified by: 
  - <code>close</code> in interface <code>AutoCloseable</code> 
  - Overrides: 
  - <code>close</code> in class <code>org.apache.hadoop.mapred.MapReduceBase</code> 
  - Throws: 
  - <code>IOException</code>       
-

configure

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

  - Specified by: 
  - <code>configure</code> in interface <code>org.apache.hadoop.mapred.JobConfigurable</code> 
  - Overrides: 
  - <code>configure</code> in class <code>org.apache.hadoop.mapred.MapReduceBase</code>        
-

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: 
  - <code>reduce</code> in interface <code>org.apache.hadoop.mapred.Reducer<org.apache.hadoop.io.text,crawldatum,org.apache.hadoop.io.text,crawldatum></org.apache.hadoop.io.text,crawldatum,org.apache.hadoop.io.text,crawldatum></code> 
  - Throws: 
  - <code>IOException</code>

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