Book Image

Learning PySpark

By : Tomasz Drabas, Denny Lee
Book Image

Learning PySpark

By: Tomasz Drabas, Denny Lee

Overview of this book

Apache Spark is an open source framework for efficient cluster computing with a strong interface for data parallelism and fault tolerance. This book will show you how to leverage the power of Python and put it to use in the Spark ecosystem. You will start by getting a firm understanding of the Spark 2.0 architecture and how to set up a Python environment for Spark. You will get familiar with the modules available in PySpark. You will learn how to abstract data with RDDs and DataFrames and understand the streaming capabilities of PySpark. Also, you will get a thorough overview of machine learning capabilities of PySpark using ML and MLlib, graph processing using GraphFrames, and polyglot persistence using Blaze. Finally, you will learn how to deploy your applications to the cloud using the spark-submit command. By the end of this book, you will have established a firm understanding of the Spark Python API and how it can be used to build data-intensive applications.
Table of Contents (20 chapters)
Learning PySpark
Credits
Foreword
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Introducing TensorFrames


At the time of writing, TensorFrames is an experimental binding for Apache Spark; it was introduced in early 2016, shortly after the release of TensorFlow. With TensorFrames, one can manipulate Spark DataFrames with TensorFlow programs. Referring to the tensor diagrams in the previous section, we have updated the figure to show how Spark DataFrames work with TensorFlow, as shown in the following diagram:

As noted in the preceding diagram, TensorFrames provides a bridge between Spark DataFrames and TensorFlow. This allows you to take your DataFrames and apply them as input into your TensorFlow computation graph. TensorFrames also allows you to take the TensorFlow computation graph output and push it back into DataFrames so you can continue your downstream Spark processing.

In terms of common usage scenarios for TensorFrames, these typically include the following:

Utilize TensorFlow with your data

The integration of TensorFlow and Apache Spark with TensorFrames allows...