The HBase community has just unanimously EOLed HBase 1.3. As I recall, 1.3 has some significant differences with 1.4+ that we have to workaround via compatibility shim, particularly with metrics and changes to the HBase Scan API. (In particular, the scan API changes are difficult to handle even with the shim.)
Should we simplify our 4.x branch by removing 1.3 support for the upcoming 4.16 release? Geoffrey
