private void mrLevelFailedAzkabanJob() {
    this._state = JobState.MRFAIL;
    Matcher matcher = _scriptOrMRFailExceptionPattern.matcher(_rawLog);
    StringBuilder exceptionBuilder = new StringBuilder();
    long limit = SAMPLING_SIZE;
    while (matcher.find() && limit > 0) {
      limit--;
      exceptionBuilder.append(matcher.group());
    }
    this._exception = new LoggingEvent(exceptionBuilder.toString());
  }
Sets _state and _exception for Azkaban job which failed at the MR Level
app/com/linkedin/drelephant/exceptions/azkaban/AzkabanJobLogAnalyzer.java