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Big Data Analytics with R and Hadoop by Vignesh Prajapati

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Chapter 2. Writing Hadoop MapReduce Programs

In the previous chapter, we learned how to set up the R and Hadoop development environment. Since we are interested in performing Big Data analytics, we need to learn Hadoop to perform operations with Hadoop MapReduce. In this chapter, we will discuss what MapReduce is, why it is necessary, how MapReduce programs can be developed through Apache Hadoop, and more.

In this chapter, we will cover:

  • Understanding the basics of MapReduce
  • Introducing Hadoop MapReduce
  • Understanding the Hadoop MapReduce fundamentals
  • Writing a Hadoop MapReduce example
  • Understanding several possible MapReduce definitions to solve business problems
  • Learning different ways to write Hadoop MapReduce in R

Understanding the basics of MapReduce ...

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