Cassandra ships with a very basic interactive command line interface, or shell. Using the CLI you can connect to remote nodes in the cluster, create or update your schema, set and retrieve records and columns, or query node and cluster meta-data (i.e. cluster name, keyspace listings and disposition, etc). This page is intended for those using Cassandra 0.8.x. For CLI docs on 0.7.x see this page, 0.6.x, see this page.
You can start the CLI using the bin/cassandra-cli startup script in your Cassandra installation.
详解见出处
http://wiki.apache.org/cassandra/CassandraCli08?highlight=%28rows%5C_cached%29