Most of Hudi content is hosted on the project site or the Github repo.
If you are looking for documentation on using Apache Hudi, please visit the project site or engage with our community
Design documents/RFCs
RFCs are the way to propose large changes to Hudi and the RFC Process details how to go about driving one from proposal to completion. Anyone can initiate a RFC. Please note that if you are unsure of whether a feature already exists or if there is a plan already to implement a similar one, always start a discussion thread on the dev mailing list before initiating a RFC. This will help everyone get the right context and optimize everyone’s usage of time.