Nick Dimiduk created HBASE-25015: ------------------------------------ Summary: PerformanceEvaluation with presplit randomWrite test has severe hotspotting Key: HBASE-25015 URL: https://issues.apache.org/jira/browse/HBASE-25015 Project: HBase Issue Type: Bug Components: test Affects Versions: 2.3.1 Reporter: Nick Dimiduk
I'm attempting to apply a load to a small distributed cluster (12 RS). I use {{--presplit}} and specify 3 regions per region server. {{randomWrite}} test with {{--nomapred}} and 30 client threads. The result is severe hot-spotting on a single region region (10's of thousands of reqs/sec) and minimal load (high 10's to low 100's reqs/sec) to the others. It seems the split algorithm and the load generator do not agree on an even data distribution. -- This message was sent by Atlassian Jira (v8.3.4#803005)