In the About the Technology section on the book's webpage it says "Hadoop powers mission-critical software at Apple, eBay, LinkedIn, Yahoo, and Facebook. What are some specific examples of how Hadoop is used at those companies?
posted 3 years ago
Most of these organizations leverage Hadoop for some heavy data-lifting activities such as aggregation, structured and unstructured data joins, and data analytics. Hadoop is also used as a storage platform for places like Facebook where they leverage technologies such as HBase. There's a decent amount of literature online where these organizations have published presentations on their Hadoop use cases, which are probably worth investigating.