Can you tell us which release of hbase you used ? Please describe values for the config parameters in hbase-site.xml
Do you have SSD(s) in your cluster ? If so and the mixed workload involves writes, have you taken a look at HBASE-12848 ? Cheers On Fri, Mar 31, 2017 at 7:29 PM, 杨苏立 Yang Su Li <yangs...@gmail.com> wrote: > Hi, > > We found that when there is a mix of CPU-intensive and I/O intensive > workload, HBase seems to slow everything down to the disk throughput level. > > This is shown in the performance graph at > http://pages.cs.wisc.edu/~suli/blocking-orig.pdf : both client-1 and > client-2 are issuing 1KB Gets. From second 0 , both repeatedly access a > small set of data that is cachable and both get high throughput (~45k > ops/s). At second 60, client-1 switch to an I/O intensive workload and > begins to randomly access a large set of data (does not fit in cache). > *Both* client-1 and client-2's throughput drops to ~0.5K ops/s. > > Is this acceptable behavior for HBase or is it considered a bug or > performance drawback? > I can find an old JIRA entry about similar problems ( > https://issues.apache.org/jira/browse/HBASE-8836), but that was never > resolved. > > Thanks. > > Suli > > -- > Suli Yang > > Department of Physics > University of Wisconsin Madison > > 4257 Chamberlin Hall > Madison WI 53703 >
