Cassandra Reaper

Reaper is an open source tool that aims to schedule and orchestrate repairs of Apache Cassandra clusters.

It improves the existing nodetool repair process by

• Splitting repair jobs into smaller tunable segments.
• Handling back-pressure through monitoring running repairs and pending compactions.
• Adding ability to pause or cancel repairs and track progress precisely.

Reaper ships with a REST API, a command line tool and a web UI.