presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorSessionProperties.java/RaptorSessionProperties/getReaderMaxReadSize
class RaptorSessionProperties:    public static DataSize getReaderMaxReadSize(ConnectorSession session)
    {
        return session.getProperty(READER_MAX_READ_SIZE, DataSize.class);
    }