Java Persistence API with HBase
Sounds like the same JPA solution used by Google AppEngine can be used for HBase too:
It is possible to easily use JDO/JPA (via Datanucleus) to persist objects in the HBase BigTable implementation.
via: http://matthiaswessendorf.wordpress.com/2010/03/17/apache-hadoop-hbase-plays-nice-with-jpa/