Hi, I am testing MatrixFactorizationModel.predict(user: Int, product: Int) but the code fails on userFeatures.lookup(user).head
In computeRmse MatrixFactorizationModel.predict(RDD[(Int, Int)]) has been called and in all the test-cases that API has been used... I can perhaps refactor my code to do the same but I was wondering whether people test the lookup(user) version of the code.. Do I need to cache the model to make it work ? I think right now default is STORAGE_AND_DISK... Thanks. Deb
