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  • Book Overview & Buying Fast Data Processing with Spark 2
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Fast Data Processing with Spark 2

Fast Data Processing with Spark 2 - Third Edition

By : Krishna Sankar , Holden Karau
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Fast Data Processing with Spark 2

Fast Data Processing with Spark 2

By: Krishna Sankar , Holden Karau

Overview of this book

When people want a way to process big data at speed, Spark is invariably the solution. With its ease of development (in comparison to the relative complexity of Hadoop), it’s unsurprising that it’s becoming popular with data analysts and engineers everywhere. Beginning with the fundamentals, we’ll show you how to get set up with Spark with minimum fuss. You’ll then get to grips with some simple APIs before investigating machine learning and graph processing – throughout we’ll make sure you know exactly how to apply your knowledge. You will also learn how to use the Spark shell, how to load data before finding out how to build and run your own Spark applications. Discover how to manipulate your RDD and get stuck into a range of DataFrame APIs. As if that’s not enough, you’ll also learn some useful Machine Learning algorithms with the help of Spark MLlib and integrating Spark with R. We’ll also make sure you’re confident and prepared for graph processing, as you learn more about the GraphX API.
Table of Contents (13 chapters)
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Spark SQL how-to in a nutshell


Prior to Spark 2.0.0, the heart of Spark SQL was SchemaRDD, which, as you can guess, associates a schema with an RDD. Of course, internally it does a lot of magic by leveraging the ability to scale and distribute processing and providing flexible storage.

In many ways, data access via Spark SQL is deceptively simple; we mean the process of creating one or more appropriate RDDs by paying attention to the layout, data types, and so on, and then accessing them via SchemaRDDs. We get to use all the interesting features of Spark to create the RDDs: structured data from Hive or Parquet, unstructured data from any source, and the ability to apply RDD operations at scale. Then, you need to overlay the respective schemas to the RDDs by creating SchemaRDDs. Voilà! You now have the ability to run SQL over RDDs. You can see the SchemaRDDs being created in the log entries.

Spark SQL with Spark 2.0

The preceding section was true until Spark 2.0 (actually Datasets have been...

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