CMS Analysis and Data Reduction with Apache Spark. - Oliver Gutsche; Luca Canali; Illia Cremer; Matteo Cremonesi; Peter Elmer; Ian Fisk; Maria Girone; Bo Jayatilaka; Jim Kowalkowski; Viktor Khristenko; Evangelos Motesnitsalis; Jim Pivarski; et al. (CoRR, 2017)