Problem Statement/Rationale

TLP invariant violation when translating Redis GET to mongosh findOne and partitioning by $type

Please be sure to attach relevant logs with any sensitive data redacted.
How to retrieve logs for: Compass; Shell

Steps to Reproduce

In mongosh:   

   db.collectionName.drop();
   db.collectionName.insertOne({ mykey: "hello" });
   db.collectionName.insertOne({ nynnubkc: "hello" });
   db.collectionName.insertOne({ mykey: "hello" });
   db.collectionName.insertOne({ dssplpey: 41788 });

Execute the TLP queries:

   const original = db.collectionName.findOne({ dssplpey:

{ $exists: true }

});
   const tlpTrue = db.collectionName.findOne({ dssplpey:

{ $exists: true, $type: "number" }

});
   const tlpFalse = db.collectionName.findOne({ dssplpey: { $exists: true, $not:

{ $type: "number" }

} });
   const tlpNull = db.collectionName.findOne({ dssplpey:

{ $exists: false }

});

Expected Results

count(original) == count(tlpTrue) + count(tlpFalse) + count(tlpNull)

Actual Results

original = 1, tlpTrue = 1, tlpFalse = 0, tlpNull = 1, so partitionSum = 2 ≠ 1. tlpNull returns 

{ mykey: "hello" }

 (no dssplpey), breaking the invariant.

Additional Notes

Any additional information that may be useful to include.