The Apache BookKeeper community welcomes contributions from anyone with a passion for distributed systems! BookKeeper has many different opportunities for contributions -- write new examples/tutorials, add new user-facing libraries, work on the core storage components, integrate with different metadata stores (ZooKeeper, Etcd etc), or participate on the documentation effort.
We use a review-then-commit workflow in BookKeeper for all contributions.
We would love for you to contribute to Apache BookKeeper and make it even better! Please check the Contributing to Apache BookKeeper page before starting to work on the project.