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https://issues.apache.org/jira/browse/DERBY-5067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen resolved DERBY-5067.
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Resolution: Fixed
Fix Version/s: 10.8.0.0
Committed revision 1074449.
> Performance regression tests should populate tables before creating indexes
> ---------------------------------------------------------------------------
>
> Key: DERBY-5067
> URL: https://issues.apache.org/jira/browse/DERBY-5067
> Project: Derby
> Issue Type: Improvement
> Components: Test
> Affects Versions: 10.8.0.0
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Fix For: 10.8.0.0
>
> Attachments: pk.diff, select.png
>
>
> I've noticed that the results from some of the performance regression tests
> have become more unstable the last two weeks. See for example here:
> http://home.online.no/~olmsan/derby/perf/select_30d.html
> I suspect it's because the automatic index statistics thread is running (the
> instability started at about the same time as it was enabled). We should make
> the test clients create indexes after the tables have been populated so that
> the statistics will be up to date and no work in the background is needed.
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