> Regarding number of map tasks 500+, 490 of them processing nothing, do you > have an explanation > for that?..Wondering if its kicking off too many JVMs most doing nothing..
This would mean that throughout your regions, only a few have data in the timestamp range you're looking for. > > 'top' reports less free memory (couple of gig.) though box has 36 gig total.. > I don't quite trust > top since cached blocks don't show up under free column even if no process is > running.. > You only have 1 machine? BTW how much RAM did you give to HBase? J-D