MapR 5.0 Documentation : Creating MapR-DB Applications

MapR-DB includes a version of libhbase, the open source library of C APIs for creating and accessing Apache HBase tables, The version in MapR-DB, which is included in libMapRClient, runs more efficiently on MapR-DB and performs faster against MapR-DB tables.

MapR-DB also supports all of the Apache HBase 0.98 Java APIs, except where noted in this documentation. For a number of critical Java APIs, for filters, and for comparators, this documentation explicitly lists what is supported, rather than what is not supported. 

You can easily port existing applications that use the open-source version of libhbase or the HBase Java APIs to use MapR-DB tables.