anchor.diff:  
   handle_call({fold, Fun, Acc0}, _From,
               State = #state{partition = Partition}) ->
  -
       DataDir = application:get_env(riak_core, platform_data_dir, "data"),
       PartitionDir = [DataDir, $/,  integer_to_list(Partition)],
       case file:list_dir(PartitionDir) of
  
positive.code:                    size = _Size,
                     lacc = AccL,
                     acc_fun = Fun,
                     hacc = AccIn}) when
        _Size > ?FOLD_SIZE ->
      AccOut = Fun({Bucket, Metric}, lists:reverse(AccL), AccIn),
      Size = mmath_bin:length(V),
      Acc#facc{
  
negative.code:              #facc{metric = Metric,
                     size = Size,
                     last = Last,
                     lacc = [{T0, AccE} | AccL],
                    max_delta = _MaxDelta}) when
        (Time - Last) =< _MaxDelta ->
      Delta = Time - Last,
      ThisSize = mmath_bin:length(V),
      AccV = case Delta of
  