David: Have you looked at HBASE-3996 ' Support multiple tables and scanners as input to the mapper in map/reduce jobs' ?
Cheers On Sat, Mar 22, 2014 at 6:58 PM, David Koch <[email protected]> wrote: > Hello, > > We run M/Rs over several HBase tables at the same time and chose to reduce > region sizes in order to make map tasks faster and improve map-slot > turnaround between the concurrent jobs. However, I am worried many regions > will cause longer overall compactions of the HBase data. Is this the case? > > I am thinking about extending TableInputFormat to override the > 1-map-per-region default policy as an alternative. > > Regards, > > /David >
