Preface

This book is here to help you make sense of Hadoop and use it to solve your big data problems. It's a really exciting time to work with data processing technologies such as Hadoop. The ability to apply complex analytics to large data sets—once the monopoly of large corporations and government agencies—is now possible through free open source software (OSS).

But because of the seeming complexity and pace of change in this area, getting a grip on the basics can be somewhat intimidating. That's where this book comes in, giving you an understanding of just what Hadoop is, how it works, and how you can use it to extract value from your data now.

In addition to an explanation of core Hadoop, we also spend several chapters exploring other technologies that either use Hadoop or integrate with it. Our goal is to give you an understanding not just of what Hadoop is but also how to use it as a part of your broader technical infrastructure.

A complementary technology is the use of cloud computing, and in particular, the offerings from Amazon Web Services. Throughout the book, we will show you how to use these services to host your Hadoop workloads, demonstrating that not only can you process large data volumes, but also you don't actually need to buy any physical hardware to do so.