presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/backup/HttpBackupStore.java/HttpBackupStore/xxHash64
class HttpBackupStore:    private static long xxHash64(File file)
    {
        try (InputStream in = new FileInputStream(file)) {
            return XxHash64.hash(in);
        }
        catch (IOException e) {
            throw new PrestoException(RAPTOR_BACKUP_ERROR, "Failed to read file: " + file, e);
        }
    }