contributing

name	contributing
description	Guides the contribution workflow for Apache Beam, including creating PRs, issue management, code review process, and release cycles. Use when contributing code, creating PRs, or understanding the contribution process.

Contributing to Apache Beam

Getting Started

Prerequisites

• GitHub account
• Java JDK 11 (preferred, or 8, 17, 21)
• Latest Go 1.x
• Docker
• Python (any supported version for manual testing, all versions for running test suites)
• For large contributions: signed ICLA to Apache Software Foundation

Environment Setup Options

Local Setup (automated)

./local-env-setup.sh

Docker-based Setup

./start-build-env.sh

Contribution Workflow

1. Find or Create an Issue

• Search existing issues at https://github.com/apache/beam/issues
• Create new issue using appropriate template

2. Claim the Issue

.take-issue    # Assigns issue to you
.free-issue    # Unassigns issue from you
.close-issue   # Closes the issue

3. For Large Changes

• Discuss on [e-mail] mailing list
• Create design doc using template
• Review existing design docs

4. Make Your Changes

• Every source file needs Apache license header
• New dependencies must have Apache-compatible open source licenses
• Add unit tests for your changes
• Use descriptive commit messages