@Before
  public void openFileSystem() throws Exception {
    conf = new Configuration();
    fs = FileSystem.getLocal(conf);
    Path workDir = new Path(System.getProperty("test.tmp.dir",
        "target" + File.separator + "test" + File.separator + "tmp"));
    fs.setWorkingDirectory(workDir);
    testFilePath = new Path("TestVectorizedORCReader.testDump.orc");
    fs.delete(testFilePath, false);
  }
Class that tests ORC reader vectorization by comparing records that are
returned by "row by row" reader with batch reader.
ql/src/test/org/apache/hadoop/hive/ql/io/orc/TestVectorizedORCReader.java