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Mastering Spark for Data Science

You're reading from   Mastering Spark for Data Science Lightning fast and scalable data science solutions

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781785882142
Length 560 pages
Edition 1st Edition
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Authors (5):
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David George David George
Author Profile Icon David George
David George
Matthew Hallett Matthew Hallett
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Matthew Hallett
Antoine Amend Antoine Amend
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Antoine Amend
Andrew Morgan Andrew Morgan
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Andrew Morgan
Albert Bifet Albert Bifet
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Albert Bifet
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Table of Contents (15) Chapters Close

Preface 1. The Big Data Science Ecosystem 2. Data Acquisition FREE CHAPTER 3. Input Formats and Schema 4. Exploratory Data Analysis 5. Spark for Geographic Analysis 6. Scraping Link-Based External Data 7. Building Communities 8. Building a Recommendation System 9. News Dictionary and Real-Time Tagging System 10. Story De-duplication and Mutation 11. Anomaly Detection on Sentiment Analysis 12. TrendCalculus 13. Secure Data 14. Scalable Algorithms

Spark architecture

Apache Spark is designed to simplify the laborious, and sometimes error prone task of highly-parallelized, distributed computing. To understand how it does this, let's explore its history and identify what Spark brings to the table.

History of Spark

Apache Spark implements a type of data parallelism that seeks to improve upon the MapReduce paradigm popularized by Apache Hadoop. It extended MapReduce in four key areas:

  • Improved programming model: Spark provides a higher level of abstraction through its APIs than Hadoop; creating a programming model that significantly reduces the amount of code that must be written. By introducing a fluent, side-effect-free, function-oriented API, Spark makes it possible to reason about an analytic in terms of its transformations and actions, rather than just sequences of mappers and reducers. This makes it easier to understand and debug.
  • Introduces workflow: Rather than chaining jobs together (by persisting results to disk...
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