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hadoop-quickstart's Introduction

hadoop-quickstart

An Bootstrap implementation for apache hadoop or apache mahout projects. You can easily start your own hadoop project with this, without configuration.

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Prerequsitives

  • JDK (>= 7)
  • maven (>= 3.0)
  • hadoop (>= 0.23.203)

How to install mrunit

To run unit tests on MapReduce code, you must install mrunit on your local maven repository first. To install it, execute following commands:

git clone git://github.com/apache/mrunit.git

git checkout [tag-name] # for example, 'release-1.0.0-hadoop1'

mvn install

How to build

mvn clean package

How to run

hadoop fs -copyFromLocal testtxt.seq /testtxt.seq # copy included file onto your hdfs

hadoop jar target/hadoop-quickstart-1.0-job.jar com.github.dongjinleekr.hadoop.quickstart.WordCountJob -e 10 -i /testtxt.seq -o /counted.out

You can check the output with following command (requires mahout):

mahout seqdumper -i /counted.out/part-r-00000

License

Copyright (C) 2013 Dongjin Lee. [email protected]

Licensed under the Apache License, Version 2.0

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