Add cross validation testing for CE sample evaluation versus BTree key generator

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    • Type: Improvement
    • Resolution: Unresolved
    • Priority: Major - P3
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    • Affects Version/s: None
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    • Query Optimization
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      The cardinality estimation module currently has a lot of custom key generation code when calculating the NDV over a sample, and bugs like SERVER-129532 indicate cases where the two implementations disagree. While using the btree key gen directly was not feasible due to performance, this ticket proposes using the btree key gen code in testing to verify the CE NDV calculations.

            Assignee:
            Nicholas Zolnierz
            Reporter:
            Nicholas Zolnierz
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              Created:
              Updated: