def _dbs_by_group(self, group, check_len=None):
        dbs = self.partition_config['groups'][group]
        if check_len:
            assert len(dbs) == check_len
        return dbs
Save OSWL statistics data for given cluster and resource_type to DB.
dataset/ETHPy150Open dimagi/commcare-hq/corehq/sql_db/config.py/PartitionConfig._dbs_by_group--crossover with--dataset/ETHPy150Open openstack/fuel-web/nailgun/nailgun/statistics/oswl/saver.py/oswl_statistics_save