anchor.diff:      Fpr = 0.1,
       Method = proplists:get_value(ru_method, Config),
       %build and fill ring
  -    build_symmetric_ring(NodeCount, Config, get_rep_upd_config(Method)),
  -    config:write(rr_bloom_fpr, Fpr),
  +    build_symmetric_ring(NodeCount, Config, [get_rep_upd_config(Method), {rr_bloom_fpr, Fpr}]),
       _ = db_generator:fill_ring(random, DataCount, [{ftype, regen}, 
                                                      {fprob, 100}, 
                                                      {distribution, uniform},
  
positive.code:     is_subtype(Status,      db_generator:db_status()).
  start_sync(Config, NodeCount, DBSize, DBParams, Rounds, Fpr, RRConfig) ->
      NodeKeys = lists:sort(get_symmetric_keys(NodeCount)),
      build_symmetric_ring(NodeCount, Config, RRConfig),
      config:write(rr_bloom_fpr, Fpr),
      erlang:put(?DBSizeKey, ?REP_FACTOR * DBSize),
      _ = db_generator:fill_ring(random, DBSize, DBParams),    
      InitDBStat = get_db_status(),
  
negative.code:     Method = proplists:get_value(ru_method, Config),
      FType = proplists:get_value(ftype, Config),
      %build and fill ring
      build_symmetric_ring(NodeCount, Config, [get_rep_upd_config(Method), {rr_bloom_fpr, Fpr}]),
      _ = db_generator:fill_ring(random, DataCount, [{ftype, FType}, 
                                                     {fprob, 50}, 
                                                     {distribution, uniform}]),
  