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hadoop_streaming's Introduction

Hadoop_Streaming

This is a easy & breif code to using the hadoop streaming to deal with word count problem

0. run_hadoop.sh

This file is to start the hadoop streaming job by shell. With the sample to calculate the word count. The data's shape is like (word, frequency, other_feature,...)

1. mapper.py

This file is to cat the data and split the data into (word, frequency) format.

2. reducer.py

This file is to collect the data from Map Process, then do a data stastic to output the word counted results.

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