From: http://www.csw.inf.fu-berlin.de/debs2012/grandchallenge.html

The DEBS 2012 Grand Challenge problem involves monitoring of large hi-tech manufacturing equipment. The overall goal of the challenge is to demonstrate the capability of the event processing system to solve the set of queries for the given data. Therefore, the problem description is divided into two major parts - the description of the available data and the description of the queries which need to be executed on the data in order to solve the problem.