Sets the limit on the number of results returned
        CQL has a default limit of 10,000

def limit(self, v):
        """
        Sets the limit on the number of results returned
        CQL has a default limit of 10,000
        """
        if not (v is None or isinstance(v, six.integer_types)):
            raise TypeError
        if v == self._limit:
            return self

        if v < 0:
            raise QueryException("Negative limit is not allowed")

        clone = copy.deepcopy(self)
        clone._limit = v
        return clone