code: void setRecentInvalTable() {
          int tableSize = _smc.getInMemorySize();
          if (tableSize > 1)
              recentInvalidIds = new LRUHashMap(tableSize / 2);
          else
              _smc.setCheckRecentlyInvalidList(false);
      }
docs: /*
  Method used to set the size of the recentInvalidatedList
  If the tableSize is <=1, we will automatically not check this list