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[jira] [Created] (CALCITE-2589) VolcanoPlanner#fireRules and VolcanoRuleCall#matchRecurse should ignore known-to-be-unimportant relations


Vladimir Sitnikov created CALCITE-2589:
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             Summary: VolcanoPlanner#fireRules and VolcanoRuleCall#matchRecurse should ignore known-to-be-unimportant relations
                 Key: CALCITE-2589
                 URL: https://issues.apache.org/jira/browse/CALCITE-2589
             Project: Calcite
          Issue Type: Improvement
          Components: core
    Affects Versions: 1.17.0
            Reporter: Vladimir Sitnikov
            Assignee: Julian Hyde


{{call.getPlanner().setImportance}} is used to avoid use of known-to-be-inefficient relation, however the check of importance is performed very late.

The check is performed in org.apache.calcite.plan.volcano.RuleQueue#skipMatch when ruleCalls have already been created.

I suggest to move the check into VolcanoPlanner#fireRules and VolcanoRuleCall#matchRecurse

It would reduce amount of "possible" rule executions.



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