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https://issues.apache.org/jira/browse/CALCITE-3891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073355#comment-17073355
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Haisheng Yuan commented on CALCITE-3891:
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[~neoremind] I used IntelliJ Profiler, and I used a long optimizing query to
profile the planner so that the planner takes almost 100% of the total time. In
your flame graph, Volcano planner only takes about 4% of total time.
> Remove use of Pair.zip in RelTraitSet.satisfies
> -----------------------------------------------
>
> Key: CALCITE-3891
> URL: https://issues.apache.org/jira/browse/CALCITE-3891
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Haisheng Yuan
> Assignee: Chunwei Lei
> Priority: Major
> Attachments: image-2020-04-01-19-05-58-306.png
>
>
> It accounts too much time of the method, even this is a tiny portion overall.
> !image-2020-04-01-19-05-58-306.png!
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