This book constitutes the thoroughly refereed joint proceedings of the Third and Fourth
Workshop on Big Data Benchmarking. The third WBDB was held in Xi'an China in July 2013 and
the Fourth WBDB was held in San José CA USA in October 2013. The 15 papers presented in
this book were carefully reviewed and selected from 33 presentations. They focus on big data
benchmarks applications and scenarios tools systems and surveys.
