Major - P3 Currently, $geoNear queries return an empty result set if the collection does not exist. These queries should return an error instead, as all $geoNear queries must be answered with an index.
Reproduce as follows:
> db.foo.drop() false > db.foo.find({a: {$near: [0, 0]}}) // Returns no error (unexpected). > db.createCollection("foo") { "ok" : 1 } > db.foo.find({a: {$near: [0, 0]}}) // Returns error (expected). Error: error: { "waitedMS" : NumberLong(0), "ok" : 0, "errmsg" : "error processing query: ns=test.fooTree: GEONEAR field=a maxdist=1.79769e+308 isNearSphere=0\nSort: {}\nProj: {}\n planner returned error: unable to find index for $geoNear query", "code" : 2 }
One possible implementation strategy would be to extend ExtensionsCallback with a new method "parseGeoNear()" which returns a not-OK status if the collection does not exist.