On Fri, Nov 18, 2016 at 7:46 AM, Graham Baecher <gbaec...@hubspot.com> wrote:
> 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? > > Hey Graham: If you do pure YCSB write, do you see a difference? You updated HBase and HDFS? Whats cluster size and commands you are running so can try replicate? You are using a vendor's hbase so we'd suggest you go ping the vendor on their mailing lists. That said, I'm interested if a regression in the 1.2 line (I'm not sure anyone has run compares of patch versions on 1.2 line). I'm game for trying to figure which commit was responsible. I opened HBASE-17128 as a working issue on which we can ping/pong configs/test runs. S > ~Graham >
