presto-rcfile/src/main/java/io/prestosql/rcfile/FileRcFileDataSource.java/FileRcFileDataSource/FileRcFileDataSource
class FileRcFileDataSource:    public FileRcFileDataSource(File path)
            throws IOException
    {
        this.path = requireNonNull(path, "path is null");
        this.size = path.length();
        this.input = new RandomAccessFile(path, "r");
    }