> You are right, there is no region split when I use no compression. > Nevertheless, as you say, if everything is in the memstore, how can it be > that I see a so big difference between my tests ?
Well did you run your test more than once? Do you see the exact same results every time? IMO at that scale the differences could be stuff like the memstore got flushed during one test and not the other. I really really recommend testing with more data. J-D