Pita/ueberDB — pull request #50 by ldidry (2013-09-17 18:48:43+00:00)
Title: Select only key field in mongo.find function (for findKeys)

If you don't select only the key field, you can exceed the maxBsonSize very fast in your response => you get a null response.

I get the problem with 1057 pads. Asking only for the key field made it works again.