HiI have two questions about rack awareness. 1、I installed a hadoop2.2 , hbase0.96 cluster， which have 2 racks. rack1 have 10 machines , rack2 have 5 machines. Because of 3 replicas, rack2 will store more data then rack1.Maybe I need to move some machines from rack2 to rack1?If I had more racks, only one have 5 machines and the others have 10 machines, Will data unbalance more serious? 2、If some racks share the same power and switch, is rack awareness necessary ?
Thanks
