presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/SemiTransactionalHiveMetastore.java/SemiTransactionalHiveMetastore/resetStatistics
class SemiTransactionalHiveMetastore:        private PartitionStatistics resetStatistics(PartitionStatistics currentStatistics)
        {
            return new PartitionStatistics(reduce(currentStatistics.getBasicStatistics(), statistics.getBasicStatistics(), SUBTRACT), ImmutableMap.of());
        }