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https://issues.apache.org/jira/browse/HBASE-11538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065824#comment-14065824
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Andrew Purtell commented on HBASE-11538:
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The tests were run with no security coprocessors installed, using HFile V2. The
YCSB workload E results indicate 0.98.4RC0 has, relative to 0.98.0, a 23%
decline in measured scan throughput and an 23% increase in average op time from
27 ms to 35 ms. This does not correspond to any active security feature (though
that could worsen results potentially, untested) so is something changed in
core code. Other workloads are not affected so this is something related to
scanning.
> 0.98.4RC0 has a scanning related 23% perf regression
> -----------------------------------------------------
>
> Key: HBASE-11538
> URL: https://issues.apache.org/jira/browse/HBASE-11538
> Project: HBase
> Issue Type: Bug
> Reporter: Andrew Purtell
> Priority: Blocker
> Fix For: 0.99.0, 0.98.4, 2.0.0
>
>
> See thread on dev@ titled "Comparing the performance of 0.98.4 RC0 and 0.98.0
> using YCSB - 23% perf regression in workload E"
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