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Require an ability to externally influence the optimizer cost model #60357

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#60333
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Require an ability to externally influence the optimizer cost model#60357
#60333
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affects-8.5This bug affects the 8.5.x(LTS) versions.report/customerCustomers have encountered this bug.sig/plannerSIG: Plannertype/enhancementThe issue or PR belongs to an enhancement.
@terry1purcell

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@terry1purcell
terry1purcell
opened on Apr 2, 2025

Enhancement

The TiDB optimizer would benefit from having an ability to influence the optimizer's cost of each physical operator in a query plan. This could be used externally to influence query plans (by customers/users and also TiDB engineers), and could be used by TiDB engineers to test and adjust the optimizer's cost model.

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    affects-8.5This bug affects the 8.5.x(LTS) versions.report/customerCustomers have encountered this bug.sig/plannerSIG: Plannertype/enhancementThe issue or PR belongs to an enhancement.

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