Minor Description
HBase tarballs have this file:
./src/main/resources/org/apache/hadoop/hbase/thrift/Hbase.thrift
Which is essential to developers writing own libraries to talk with the thrift HBase server, and for other (dev-oriented) purposes.
Currently, this isn't installed anywhere by RPMs; we could probably package it to aid developers. For non-Java HBase users, this is akin to looking for a jar.