@Test
public void testReadSparseWithMask() throws IOException {
try {
final String fileContent = "111|222|333|444|555|666|777|888|999|000|\n000|999|888|777|666|555|444|333|222|111|";
final FileInputSplit split = createTempFile(fileContent);
final CsvInputFormat<Tuple3<Integer, Integer, Integer>> format = new CsvInputFormat<Tuple3<Integer, Integer, Integer>>(PATH);
format.setFieldDelimiter('|');