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https://issues.apache.org/jira/browse/JCR-2715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jukka Zitting updated JCR-2715:
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Attachment: ThreeWayJoinTest.png
TwoWayJoinTest.png
See the attached graphs for the achieved performance improvements. That's two
orders of magnitude (from 1341ms to 10ms) for a two-way join, and almost as
much (from 1851ms to 90ms) for a three-way join.
> Improved join query performance
> -------------------------------
>
> Key: JCR-2715
> URL: https://issues.apache.org/jira/browse/JCR-2715
> Project: Jackrabbit Content Repository
> Issue Type: Improvement
> Components: jackrabbit-core, query
> Reporter: Jukka Zitting
> Assignee: Jukka Zitting
> Fix For: 2.2.0
>
> Attachments: ThreeWayJoinTest.png, TwoWayJoinTest.png
>
>
> Our current implementation of SQL2 join queries does not perform very well on
> pretty much any non-trivial data set.
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