Make sure you have either open source Cassandra (2.1 or later) or DataStax Enterprise (4.8 or greater) installed.
Getting up and running with CDM is simple. In a virtualenv, run the following:
pip install cassandra-dataset-manager
You’ll have a command line utility,
cdm, installed in your virtualenv’s bin directory. Update your local dataset list, then install the movielens-small dataset:
cdm update cdm install movielens-small
You now have the movielens-small dataset installed in your local cassandra cluster.
Next, type cqlsh to start working with the Cassandra shell.
Once cqlsh starts, type use movielens_small then desc tables to see all the tables in the schema. Type the following to read some data: