@Override
 public void processTuple(T tuple) {
   HTable table = store.getTable();
   Put put = operationPut(tuple);
   try {
     table.put(put);
   } catch (RetriesExhaustedWithDetailsException e) {
     logger.error("Could not output tuple", e);
     DTThrowable.rethrow(e);
   } catch (InterruptedIOException e) {
     logger.error("Could not output tuple", e);
     DTThrowable.rethrow(e);
   }
 }
  private void populateFile(String fileName, String contents) {
    File testFile = new File(testMeta.getDir() + "/" + fileName);

    try {
      testFile.createNewFile();
    } catch (IOException ex) {
      DTThrowable.rethrow(ex);
    }

    FileWriter fileWriter;

    try {
      fileWriter = new FileWriter(testFile);
      fileWriter.write(contents);
      fileWriter.close();
    } catch (IOException ex) {
      DTThrowable.rethrow(ex);
    }
  }
  @SuppressWarnings("deprecation")
  public static void checkOutput(int fileCount, String baseFilePath, String expectedOutput) {
    if (fileCount >= 0) {
      baseFilePath += "." + fileCount;
    }

    File file = new File(baseFilePath);

    String fileContents = null;

    try {
      fileContents = FileUtils.readFileToString(file);
    } catch (IOException ex) {
      DTThrowable.rethrow(ex);
    }

    Assert.assertEquals(
        "Single file " + fileCount + " output contents", expectedOutput, fileContents);
  }