presto-hive/src/main/java/io/prestosql/plugin/hive/authentication/HiveAuthenticationModule.java/HiveAuthenticationModule/noHdfsAuth
class HiveAuthenticationModule:    private static boolean noHdfsAuth(HiveAuthenticationConfig config)
    {
        return config.getHdfsAuthenticationType() == HdfsAuthenticationType.NONE;
    }