By '3 datanodes', did you mean that you also increased the number of region servers to 3 ?
When your test was running, did you look at Web UI to see whether load was balanced ? You can also use Ganglia for such purpose. What version of HBase are you using ? Thanks On Sat, Dec 22, 2012 at 7:43 AM, Dalia Sobhy <[email protected]>wrote: > Dear all, > > I am testing a simple hbase application on a cluster of multiple nodes. > > I am especially testing the scalability performance, by measuring the time > taken for random reads > > Data size: 200,000 row > Row key : 0,1,2 very simple row key incremental > > But i don't know why by increasing the cluster size, I see the same time. > > For ex: > 2 Datanodes: 1000 random read: 1.757 sec > 3 datanodes: 1000 random read: 1.7 sec > > So any help plzzz ?? > >
