Cassandra tools

1. The nodetool utility: A list of the available commands for managing a cluster.
2. The cassandra utility: You can start Cassandra 3.0 and 3.1 by adding them to the cassandra-env.sh file (package or tarball installations) or entering them at the command line in tarball installations.
3. The cassandra-stress tool: A Java-based stress testing utility for basic benchmarking and load testing a Cassandra cluster.
4. SSTable utilities: Tools for using, upgrading, and changing Cassandra SSTables.