For more information, read the blog post: http://aimotion.blogspot.com/2012/08/introduction-to-recommendations-with.html # Python files that aren't in the MRJob file itself need to be uploaded # separately, so put them in a tarball and use --python-archive > tar -cvf metrics.tar.gz metrics.py > python moviesSimilarities.py data/sampling.csv --python-archive data/metrics.tar.gz