Nick Dimiduk created HBASE-25015:
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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.
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