private static String getEvaluatorChangeLogFolderLocation() {
    final ApplicationId appId = YarnUtilities.getApplicationId();
    if (appId != null) {
      return appId.toString();
    }

    final String jobIdentifier = EvaluatorManager.getJobIdentifier();
    if (jobIdentifier != null) {
      return jobIdentifier;
    }

    throw new RuntimeException("Could not retrieve a suitable DFS folder for preserving Evaluator changelog.");
  }
private static String getEvaluatorChangeLogFolderLocation ( ) { final ApplicationId appId = YarnUtilities . getApplicationId ( ) ; if ( appId != null ) { return appId . toString ( ) ; } final String jobIdentifier = EvaluatorManager . getJobIdentifier ( ) ; if ( jobIdentifier != null ) { return jobIdentifier ; } throw new RuntimeException ( "Could not retrieve a suitable DFS folder for preserving Evaluator changelog." ) ; }
@return the folder for Evaluator changelog.