Comet Contributor Guide

The Comet contributor guide is for developers working on Comet itself. It covers the project architecture, the JVM and native code layout, the Arrow FFI bridge, JVM and native shuffle, and how data and plans flow between Spark and the DataFusion execution engine.

It also documents day-to-day workflows including building and testing locally, debugging, benchmarking, profiling, tracing, running the SQL test suites, adding new operators and expressions, triaging bugs, and the Comet release process.

New contributors should start with the Getting Started page. Select a topic from the navigation menu to read more.