@Override
  public void load(List<PersistedRuntimeStats> statList) {
    if (statList.size() == 0) {
      return;
    }
    ss.load(statList);
    executor.submit(new RuntimeStatsSubmitter(statList));
  }
Decorates a StatSource to be loaded and persisted in the metastore as well.
ql/src/java/org/apache/hadoop/hive/ql/plan/mapper/MetastoreStatsConnector.java