public GetItemsToReduceParams(string index, IEnumerable<string> reduceKeys, int level, bool loadData, List<object> itemsToDelete) { Index = index; Level = level; LoadData = loadData; ItemsToDelete = itemsToDelete; ItemsAlreadySeen = new HashSet<Tuple<string, int>>(); ReduceKeys = new HashSet<string>(reduceKeys); }