Why put SQL on Hadoop??

Details
“SQL on Hadoop” has become one of the most popular big data themes of 2013. Why all the hype? Join us at this meet-up to learn:
Benefits and drawbacks of SQL on Hadoop
Who's doing it, and what problems are they solving?
What are the different technology approaches?
Ideal use cases for SQL-on-Hadoop platforms: welcome to the world of insightful, interactive multi-structured analytics
About the Speaker:
Patrick Toole has engineered and implemented various big data technologies for nearly a decade. Patrick brings an incredibly broad perspective to the table given his background in development, eduction, consulting, and other implementation services in the MPP database and Hadoop markets. Patrick had started career as an engineer at various commercial software companies that were focused on solutions ranging from automation management to financial risk and compliance monitoring.

Why put SQL on Hadoop??