@Test
// We allow malformed YAML files
public void testInvalidYamlFile() throws IOException {

	final File confFile = tempFolder.newFile(GlobalConfiguration.FLINK_CONF_FILENAME);
	try (PrintWriter pw = new PrintWriter(confFile);) {
		pw.append("invalid");
	}
	assertNotNull(GlobalConfiguration.loadConfiguration(tempFolder.getRoot().getAbsolutePath()));
}