presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/metadata/ShardMetadata.java/ShardMetadata/map
class ShardMetadata:        @Override
        public ShardMetadata map(int index, ResultSet r, StatementContext ctx)
                throws SQLException
        {
            return new ShardMetadata(
                    r.getLong("table_id"),
                    r.getLong("shard_id"),
                    uuidFromBytes(r.getBytes("shard_uuid")),
                    getOptionalInt(r, "bucket_number"),
                    r.getLong("row_count"),
                    r.getLong("compressed_size"),
                    r.getLong("uncompressed_size"),
                    getOptionalLong(r, "xxhash64"),
                    OptionalLong.empty(),
                    OptionalLong.empty());
        }