public static <T> String safeGetAsStr(List<T> lst, int i) {
    if (0 <= i && i < lst.size()) {
      return lst.get(i).toString();
    } else {
      return "<out_of_range>";
    }
  }
Do a small get/scan against one store. This is required because store has no actual methods of
querying itself, and relies on StoreScanner.
hbase-testing-util/src/main/java/org/apache/hadoop/hbase/HBaseTestingUtility.java