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Assigned Teams:

Query Execution
Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:
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db.adminCommand({setParameter:1, automaticCEPlanRankingStrategy: "CBRCostBasedRankerChoice", internalQueryPlanEvaluationMaxResults: 0, internalQueryPlanEvaluationWorks: 1}) db.a.drop() db.a.createIndex({a: 1}) db.a.createIndex({b: 1}) db.a.insertOne({}) db.a.insertOne({}) db.a.insertOne({}) db.a.insertOne({}) db.a.find({a: null, b: null, c: 0})
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db.adminCommand({setParameter:1, automaticCEPlanRankingStrategy: "CBRCostBasedRankerChoice" , internalQueryPlanEvaluationMaxResults: 0, internalQueryPlanEvaluationWorks: 1}) db.a.drop() db.a.createIndex({a: 1}) db.a.createIndex({b: 1}) db.a.insertOne({}) db.a.insertOne({}) db.a.insertOne({}) db.a.insertOne({}) db.a.find({a: null , b: null , c: 0})
Sprint:
QE 2026-07-20
Linked BF Score:
200
CAR Domain/s:
None

The following tassert does not hold for when mp maxresults is set to 0:

    tassert(11306805,            "The MP estimation phase should not have filled a full batch",            numResultsMP > estRes.bestPlanNumResults);