If you want to launch the practical on your own, follow the steps :
Download last stable Redis on http://redis.io/download (3.0.5 at this time). Install it as explained on the page.
In Redis folder, enter in your terminal:
./src/redis-server
In your terminal, go in the import-data folder then:
java -jar import-data-1.0-SNAPSHOT.jar bzh.telecom.tp.storm.ImportDataLauncher