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Apache Spark 2.x for Java Developers

You're reading from   Apache Spark 2.x for Java Developers Explore big data at scale using Apache Spark 2.x Java APIs

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781787126497
Length 350 pages
Edition 1st Edition
Languages
Concepts
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Authors (2):
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Sourav Gulati Sourav Gulati
Author Profile Icon Sourav Gulati
Sourav Gulati
Sumit Kumar Sumit Kumar
Author Profile Icon Sumit Kumar
Sumit Kumar
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Toc

Table of Contents (12) Chapters Close

Preface 1. Introduction to Spark FREE CHAPTER 2. Revisiting Java 3. Let Us Spark 4. Understanding the Spark Programming Model 5. Working with Data and Storage 6. Spark on Cluster 7. Spark Programming Model - Advanced 8. Working with Spark SQL 9. Near Real-Time Processing with Spark Streaming 10. Machine Learning Analytics with Spark MLlib 11. Learning Spark GraphX

Hello Spark


In this section, we will create an Hello World program for Spark and will then get some understanding of the internals of Spark. The Hello World program in the big data world is also known as a Word Count program. Given the text data as input, we will calculate the frequency of each word or number of occurrences of each word in the text data, that is, how many times each word has appeared in the text. Consider that we have the following text data:

Where there is a will there is a way

The number of occurrences of each word in this data is:

Word

Frequency

Where

1

There

2

Is

2

A

2

Will

1

Way

1

Now we will solve this problem with Spark. So let's develop a Spark WordCount application.

Prerequisites

The following are the prerequisites for preparing the Spark application:

  • IDE for Java applications: We will be using the Eclipse IDE to develop the Spark application. Users can use any IDE as per their choice. Also, the IDE should have the Maven plugin installed (the latest version of Eclipse such as Mars...
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