I found that a curious omission too -- it's hardly possible to have a meaningful study of SQL-on-Hadoop interactive analytics in 2017 (conservatively assuming there is a 1-year lag between the study and the paper) without including Hive LLAP and Presto.

But having been part of the academic machine, I kind of understand. These things happen.

EDIT: I notice that a short paper was submitted to IEEE in 2017, so the study was probably done in 2016, which may explain the omission.