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Type:
Bug
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Resolution: Done
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Priority:
Minor - P4
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Affects Version/s: 1.3.1
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Component/s: None
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None
The Explain method in the C# driver doesn't pass the Fields value to the server resulting in the indexOnly value sometimes being incorrect.
To reproduce:
collection.Drop(); collection.EnsureIndex("A", "_id"); collection.Insert(new BsonDocument { { "_id", 1 }, { "A", 1 } }); collection.Insert(new BsonDocument { { "_id", 2 }, { "A", 2 } }); collection.Insert(new BsonDocument { { "_id", 3 }, { "A", 3 } }); var query = Query.EQ("A", 1); var fields = Fields.Include("_id"); var cursor = collection.Find(query).SetFields(fields); var explain = cursor.Explain(); Console.WriteLine(explain.ToJson());