[DanWaterworth]

As I understand it, it has everything to do with the client library, some clients may call getLastError on every operation and raise errors when they occur, for example.

[omni]

PyMongo, for instance, can do this for most operations by passing safe=True.

[agscala]

Oh, I thought the original article was saying that MongoDB itself would not send an error down if it was "full".