hi, I know regions will be reassigned when hbase cluster restarts. My regionserver and my datanode sit on same physical node. So in my tests after I restart hbase cluster, performance number drops, I guess this is due to data locality problem. But in a further experiment, I increase the replication factor to cluster size ( I have 8 nodes). After restart and major compaction, the performance still cannot catch up with the best scenario. I checked datanode log, most hdfs read has same src and dest node.
Anyone give me some hints on this? I wonder if anything happens during region reassignment. Thanks. Tao
