presto-hive/src/main/java/io/prestosql/plugin/hive/rcfile/HdfsRcFileDataSource.java/HdfsRcFileDataSource/HdfsRcFileDataSource
class HdfsRcFileDataSource:    public HdfsRcFileDataSource(String path, FSDataInputStream inputStream, long size, FileFormatDataSourceStats stats)
    {
        this.path = requireNonNull(path, "path is null");
        this.inputStream = requireNonNull(inputStream, "inputStream is null");
        this.size = size;
        checkArgument(size >= 0, "size is negative");
        this.stats = requireNonNull(stats, "stats is null");
    }