conf.set(Constants.IndexPath, indexPath);
conf.setInt(Constants.NumReduceTasks, numReducers);
BuildIPInvertedIndexDocSorted indexTool = new BuildIPInvertedIndexDocSorted(conf);
indexTool.run();
BuildIntPostingsForwardIndex postingsIndexer = new BuildIntPostingsForwardIndex(conf);
postingsIndexer.run();
return 0;