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https://issues.apache.org/jira/browse/CALCITE-3947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haisheng Yuan updated CALCITE-3947:
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Fix Version/s: (was: 1.23.0)
> AbstractRelOptPlanner.classes should be LinkedHashSet so that rule match
> order is deterministic across runs
> -----------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-3947
> URL: https://issues.apache.org/jira/browse/CALCITE-3947
> Project: Calcite
> Issue Type: Improvement
> Reporter: Botong Huang
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> AbstractRelOptPlanner.classes is used by subClasses() to determine things to
> put into VolcanoPlanner.classOperands, which is then used in
> VolcanoPlanner.fireRules(). Since AbstractRelOptPlanner.classes is now a
> HashSet, its iteration order is not deterministic across runs, making
> debugging hard. It should be LinkedHashSet just like many other fields in the
> planner.
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