Contributing to Trino Lance Connector¶

Thank you for your interest in contributing to the Trino Lance Connector!

Development Guide¶

Project Structure¶

Everything in this repository apart from the plugin/trino-lance mimics the layout of the Trino project. For example, the root pom file is a copy of the Trino root pom file with exactly the same content. We periodically upgrade the Trino version to stay up to date with the latest Trino features.

Building¶

Build the connector:

make install

Other available commands:

make help      # Show all available commands
make build     # Compile and package
make test      # Run tests
make compile   # Compile only
make package   # Package without tests
make clean     # Clean build artifacts
make verify    # Full verification
make run       # Run development server
make lint      # Run code style checks (checkstyle, modernizer, sortpom)
make format    # Format pom.xml files
make check     # Run all checks without tests

Installation¶

Build the connector using Maven
Copy the generated plugin directory from plugin/trino-lance/target/trino-lance-<version>/ to your Trino plugins directory (e.g., /usr/lib/trino/plugin/lance/)
Configure the connector in your Trino catalog properties
Restart Trino

Running Tests¶

make test

Running the Query Runner (Development Server)¶

You can run a local Trino server for development:

make run

This starts a Trino server on port 8080 with the Lance connector configured.

Requirements¶

Java 23 or later
Trino 476 or compatible version