Returns:
            Tuple of number of items consumed, number of items added

def putmulti(self, kvpairs, dupdata=False, append=False, db=_DefaultDB):
        '''
        Returns:
            Tuple of number of items consumed, number of items added
        '''
        if self.readonly:
            raise s_exc.IsReadOnly()

        # Log playback isn't compatible with generators
        if not isinstance(kvpairs, list):
            kvpairs = list(kvpairs)

        try:
            self.dirty = True

            if not self.recovering:
                self._logXactOper(self.putmulti, kvpairs, dupdata=dupdata, append=append, db=db)

            with self.xact.cursor(db=db.db) as curs:
                return curs.putmulti(kvpairs, dupdata=dupdata, append=append)

        except lmdb.MapFullError:
            return self._handle_mapfull()