Big Data Analytics with R and Hadoop

Really substandard: highly repetitive and self-contradictory with a stream of consciousness layout rather than orderly presentation of information. Terminology is inconsistent in places, leading to some confusion.

This book is severely in need of an editor to fix the meaningless sentences and bad grammar. I don't always expect American or British English but I do expect the sentences to be coherent to a native speaker without a lot of effort to deduce what the author meant to convey rather than what he said.