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About the reviewers

Sumit Pal is a published author with Apress. He has 22+ years of experience in software from startups to enterprises and is an independent consultant working with big data, data visualization, and data science. He builds end-to-end data-driven analytic systems.

He has worked for Microsoft (SQLServer), Oracle (OLAP Kernel), and Verizon. He advises clients on their data architectures and builds solutions in Spark and Scala. He has spoken at many conferences in North America and Europe and has developed a big data analyst training for Experfy. He has an MS and BS in computer science.

Manoj R. Patil is a big data architect at TatvaSoft—an IT services and consulting firm. He has a bachelor's degree in engineering from COEP, Pune. He is a proven and highly skilled business intelligence professional with 18 years of experience in IT. He is a seasoned BI and big data consultant with exposure to all the leading platforms.

Earlier, he has served for organizations such as Tech Mahindra and Persistent Systems. Apart from authoring a book on Pentaho and big data, he has been an avid reviewer for different titles in the respective fields from Packt and other leading publishers.

Manoj would like to thank his entire family, especially his two beautiful angels Ayushee and Ananyaa for understanding him during the review process. He would also like to thank the Packt publication for giving this opportunity, the project co-ordinator and the author.