Nexmark simulates an online auction setting and was originally designed as an benchmark for the Niagara streaming system (see http://datalab.cs.pdx.edu/niagara/NEXMark/).
In this scenario there are three streams Person, Auction and Bid and stored information (Category). At every time, new users can register themself in the system and create new auctions. Each user can also generate bids for auction. The Schema can be found in the picture above.
We adapted this scenario for Odysseus and allow to configure the scenario.
Get and Start Nexmark Generator
Go to http://odysseus.informatik.uni-oldenburg.de/download/nexmark/ and download a version that fits to your operatoring system (e.g. nexmark.win32.win32.x86_64.zip for a 64bit Windows).
Unzip the archive and start the "nexmark.exe" within the nexmark folder. This should look like in the following:
You may see that the benchmark opens 4 servers on ports 65440 - 65443 where you can connect to.Now Odysseus can use the nexmark sources. Each time an Odysseus query connects to one of the servers a new scenario is started, i.e. the same users and the same auctions are generated, so the same queries will always create the same results.