Introduction

The genesis of this book began in 2012. Hadoop was being explored in mainstream organizations, and we believed that information architecture was about to be transformed. For many years, business intelligence and analytics solutions had centered on the enterprise data warehouse and data marts, and on the best practices for defining, populating, and analyzing the data in them. Optimal relational database design for structured data and managing the database had become the focus of many of these efforts. However, we saw that focus was changing.

For the first time, streaming data sources were seen as potentially important in solving business problems. Attempts were made to explore such data experimentally in hope of finding hidden value. ...

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