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https://issues.apache.org/jira/browse/CALCITE-3753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haisheng Yuan resolved CALCITE-3753.
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Fix Version/s: 1.23.0
Resolution: Fixed
Fixed in
https://github.com/apache/calcite/commit/80e6b023d4b92b2b25908c52e10f50792787cef8
and
https://github.com/apache/calcite/commit/15fa9bc67a8ed12ec6b8e0d1dbced8760ae307ab.
> Remove rulematch ordering and execute substitution rule first
> -------------------------------------------------------------
>
> Key: CALCITE-3753
> URL: https://issues.apache.org/jira/browse/CALCITE-3753
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Haisheng Yuan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.23.0
>
> Attachments: image-2020-01-27-20-27-57-957.png
>
> Time Spent: 9h 40m
> Remaining Estimate: 0h
>
> In VolcanoPlanner, some rules e.g. ProjectMergeRule, PruneEmptyRule can be
> defined as SubstitutionRule, so that we can always try to match and execute
> them first (without deferring rule call). All the other rulematches doesn't
> need to be sorted and rules can be executed in any order they matched, since
> we are going to execute all of them anyway, sooner or later. Computing and
> comparing importances cause a lot of latency.
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