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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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None
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Query Optimization
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Fully Compatible
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ALL
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QO 2025-02-03
> db.adminCommand({setParameter:1, planRankerMode: "heuristicCE"})
> db.createCollection("clustered", {clusteredIndex: {key: {_id: 1}, unique: true}})
> db.clustered.insert({a: 1})
> db.clustered.find({_id: 1}, {_id: 1, 'foo.bar': 0})
MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
Segault :(
The codepath for clustered collections failed to populate the collStats, resulting in a nullptr dereference in the CardinalityEstimator constructor.
I filed this distinctly from SERVER-97373 because this is a crash in the constructor of CardinalityEstimator, whereas SERVER-97373 may fallback after this constructor.
- is related to
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SERVER-97373 Fallback to multiplanning for unsupported collection and index scans
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- Closed
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