anchor.diff:          do_put(Key, Value, S)
       catch
           throw:{stop, empty_keygen} ->
  -            ?DEBUG("Empty keygen @ ~P\n", [S, 13]),
  +            ?DEBUG("Empty keygen\n", []),
               NewS = rotate_idx(S),
               do_put(filter_key_gen(KeyGen, NewS), ValueGen(), NewS)
      end.
  
positive.code:                   backend_flags = BackendFlags,
                    data_dir = DataDir,
                    idxes_to_do = [Idx|Idxes]} = S0) ->
      ?DEBUG("rotate_idx: Id ~p self() ~p old_idx ~p\n", [S0#state.id, self(), S0#state.idx]),
      S1 = stop_idx(S0),
      basho_bench_keygen:reset_sequential_int_state(),
      Handle = start_idx(Backend, BackendFlags, DataDir, Idx),
  
negative.code:                                                     NewMD),
                                      <<42:32/big>>))}.
  
  calc_bkey_to_prefidxes(Bucket, Key, RingSize, N) when is_integer(RingSize) ->
      calc_bkey_to_prefidxes(Bucket, Key, riak_core_ring:fresh(RingSize, nonode),
                             N);
  calc_bkey_to_prefidxes(Bucket, Key, Ring, N) ->
      DocIdx = riak_core_util:chash_std_keyfun({Bucket, Key}),
      Preflist = lists:sublist(riak_core_ring:preflist(DocIdx, Ring), N),
      [I || {I, _} <- Preflist].
  