@Override
    public int run(String[] args) throws Exception {
      if (args.length != 2) {
        System.out
          .println("Usage : " + Verify.class.getSimpleName() + " <output dir> <num reducers>");
        return 0;
      }

      String outputDir = args[0];
      int numReducers = Integer.parseInt(args[1]);

      return run(outputDir, numReducers);
    }
Dump out extra info around references if there are any. Helps debugging.
@return StringBuilder filled with references if any.
hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestBigLinkedList.java