presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/storage/StorageManager.java/StorageManager/getPageSource
class StorageManager:    ConnectorPageSource getPageSource(
            UUID shardUuid,
            OptionalInt bucketNumber,
            List<Long> columnIds,
            List<Type> columnTypes,
            TupleDomain<RaptorColumnHandle> effectivePredicate,
            OrcReaderOptions orcReaderOptions,
            OptionalLong transactionId);