Hi all, We're looking to update the HBase version we're running on our servers, but noticed while comparing performance test results a the previous version that Puts now seem to be slower. Specifically, comparing HBase 1.2.0-cdh5.9.0 to 1.2.0-cdh5.8.0 using YCSB, it looks like mean read latency is improved in cdh5.9 but mean write latency is worse, and the net effect in a 50% read/50% write workload is a performance degradation. FWIW, we've been testing with `hbase.ipc.server.callqueue.type` = "deadline" on both versions.
Has anyone else using CDH 5.9.0 HBase run into this, or know what might be the cause? ~Graham
