I just have a quick and dirty implementation of a MongoDB storage handler for HIVE, the project is hosted on GitHub: https://github.com/yc-huang/Hive-mongo. Since Hive table do not support 'update' efficiently, we use MongoDB to store those data, e.g. 'meta' data like user profile info, which need to be updated sometimes.
Post here in case maybe someone else need the same thing, and also welcome bug reports and suggestions, thanks. YC
