private URL getTaskAttemptURL(String jobId, String taskId, String attemptId) throws MalformedURLException {
    return _urlFactory.getTaskAttemptURL(jobId, taskId, attemptId);
  }
This class implements the Fetcher for MapReduce Applications on Hadoop2
app/com/linkedin/drelephant/mapreduce/fetchers/MapReduceFetcherHadoop2.java