Robust Performance in Database Query Processing (Dagstuhl Seminar 17222).

The Dagstuhl Seminar 17222 on “Robust performance in database query processing”, held from 28/May until 02/June 2017, brought together researchers from academia and industry to discuss aspects of robustness in database management systems that have not been addressed by the previous instances of the seminar. This article summarizes the main discussion topics, and presents the summary of the outputs of four work groups that discussed: i) updates and database utilities, ii) parallelism, partitioning and skew, iii) dynamic join sequences, and iv) machine learning techniques used to explain unexpected performance observations. Seminar May 28–2, 2017 – http://www.dagstuhl.de/17222 1998 ACM Subject Classification H.2 Database Management, H.2.2 Physical Design: Access Methods, H.2.4 Systems: Parallel databases, Query processing, Relational databases