edu.umd.cloud9.collection.trec
Class DemoCountTrecDocuments

java.lang.Object
  org.apache.hadoop.conf.Configured
      edu.umd.cloud9.collection.trec.DemoCountTrecDocuments

All Implemented Interfaces:

Configurable, Tool

public class DemoCountTrecDocuments
extends Configured
implements Tool

Simple demo program that counts all the documents in the TREC collection. This provides a skeleton for MapReduce programs to process the collection. The program takes three command-line arguments:

• [input] path to the document collection
• [output-dir] path to the output directory
• [mappings-file] path to the docno mappings file

Here's a sample invocation:

 hadoop jar cloud9.jar edu.umd.cloud9.collection.trec.DemoCountTrecDocuments \
 /umd/collections/trec/trec4-5_noCR.xml \
 /user/jimmylin/count-tmp \
 /user/jimmylin/docno.mapping
 

Author:

Jimmy Lin

Constructor Summary

DemoCountTrecDocuments()
Creates an instance of this tool.

Method Summary

static void	main(String[] args) Dispatches command-line arguments to the tool via the ToolRunner.
int	run(String[] args) Runs this tool.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

DemoCountTrecDocuments

public DemoCountTrecDocuments()

Creates an instance of this tool.

Method Detail

run

public int run(String[] args)
        throws Exception

Runs this tool.

Specified by:

run in interface Tool

Throws:

Exception

main

public static void main(String[] args)
                 throws Exception

Dispatches command-line arguments to the tool via the ToolRunner.

Throws:

Exception