public Map<String, Long> getStats() {
    HashMap<String, Long> ret = new HashMap<String, Long>();
    for (String one : statsMap.keySet()) {
      ret.put(one, Long.valueOf(statsMap.get(one).get()));
    }
    return (ret);
  }
Store the alias this operator is working on behalf of.
ql/src/java/org/apache/hadoop/hive/ql/exec/Operator.java