Welcome to Apache Giraph!

Apache Giraph is an iterative graph processing system built for high scalability. For example, it is currently used at Facebook to analyze the social graph formed by users and their connections. Giraph originated as the open-source counterpart to Pregel, the graph processing architecture developed at Google and described in a 2010 paper. Both systems are inspired by the Bulk Synchronous Parallel model of distributed computation introduced by Leslie Valiant. Giraph adds several features beyond the basic Pregel model, including master computation, sharded aggregators, edge-oriented input, out-of-core computation, and more. With a steady development cycle and a growing community of users worldwide, Giraph is a natural choice for unleashing the potential of structured datasets at a massive scale. To learn more, consult the User Docs section above.

Download Official releases of Giraph may be downloaded from an Apache mirror. Pre-built packages are also available through Apache's Maven repositories, making it easier to include Giraph in your projects.

News June 11, 2020: Giraph 1.3.0 is now released! Please pick up a copy here.

Please pick up a copy here. Oct 20, 2016: Giraph 1.2.0 is now released! Please pick up a copy here.

Please pick up a copy here. Oct 28, 2015: Practical Graph Analytics with Apache Giraph is now available from Apress. More details in our books section here.

More details in our books section here. Nov 19, 2014: Giraph 1.1.0 is now released! Please pick up a copy here.

Please pick up a copy here. May 6, 2013: Giraph 1.0.0 is now released! Please pick up a copy here.

Please pick up a copy here. February 6, 2012: Giraph 0.1-incubating released. The Giraph PPMC is excited to announce that version 0.1 has been released. Grab a copy of the archived release here.