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MapReduce

Introduction

MapReduce wordcount

Character

Mapper

Combiner

  • it is optional, to lighten the work load for reducer.

Partition

Reducer

Optimization

Resources

Book

Machine Learning in Action

  • Big data and MapReduce - Ch 15

Hadoop - The Definitive Guide

  • MapReduce - Ch 2

Links

Topic

Combiner

Example

Python

Library