• Downloads
  • Install and Run
  • Building from Source
  • Docker
• Core Concepts
• Backends
  • In Memory
  • H2
  • Postgres
  • Cassandra
  • Astra
• Configuration Reference
  • Reaper Specific Settings
  • Backend Specific Settings
  • Docker Variables
  • Shiro Authentication
• Metrics
  • Dashboards
  • Graphite Reporter
  • Prometheus
• Using Reaper
  • Adding a Cluster
  • Checking a Cluster's Health
  • Running a Cluster Repair
  • Scheduling a Cluster Repair
  • Multi DCs with One Reaper
  • Multi DCs with Multi Reapers
  • Sidecar Mode
  • Cassandra Diagnostic Events
• Rest API
• Community
• Development

Welcome to the Reaper for Apache Cassandra documentation!

Overview

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.

This documentation includes instructions on how build, install, and configure Reaper correctly.

Compatibility

Reaper supports all versions of Apache Cassandra ranging from 1.2 to the latest release. Incremental repair is supported for versions from 2.1 and above.

A single instance of Reaper can handle repairs for clusters running different Apache Cassandra versions.

Download and Installation

Head over to the Downloads section to download the version of Reaper that is compatible with your system.