[CALCITE-5679] HepPlanner#buildFinalPlan: do not clear metadata cache if RelNode has not changed#3181
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rubenada
changed the title
… if RelNode has not changed
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Kudos, SonarCloud Quality Gate passed! |
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Because CALCITE-3791. The commit only affects current node, so I approve the PR. |
JiajunBernoulli
approved these changes
Apr 29, 2023
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+1, there is no meaning to recalculate metadata for unchanged nodes. |
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CALCITE-5679
Minor optimization:
HepPlanner#buildFinalplan clears the metadata cache info of the impacted RelNode after replacing its inputs, but in the cases where the RelNode does not change (e.g. when it has no inputs) this clear cache should not be necessary (unless I'm missing something).