anchor.diff:  
   -include("unittest.hrl").
   -include("scalaris.hrl").
  -
   -include("record_helpers.hrl").
  +
  +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   
   -record(rrNodeStatus, {
                           nodeKey     = ?required(rrNodeStatus, nodeKey)      :: ?RT:key(), 
  
positive.code:                                                        calc_sync_degree(DestVersCount - getVersionCount(getDBStatus()), 
                                                                          ItemCount)
                                                 end))],
      SyncMethod = lists:keyfind(rep_update_sync_method, 1, RepUpdConfig),
      ct:pal(">>[~p] SYNC RUN>> ~w Rounds  Fpr=~w  SyncLog ~w", [SyncMethod, Rounds, Fpr, Result]),
      %clean up
      unittest_helper:stop_ring(),
  
negative.code:                       }).
  -type rrDBStatus() :: [#rrNodeStatus{}].
  
  basic_tests() ->
      [get_symmetric_keys_test,
       blobCoding,
       mapInterval,
       tester_minKeyInInterval].
  
  upd_tests() ->
      [upd_no_outdated,
       upd_min_nodes,     % sync in an single node ring
       upd_simple,        % run one sync round
       upd_parts].        % get_chunk with limited items / leads to multiple bloom filters and/or successive merkle tree building
  
  all() ->
      [{group, basic_tests},
       {group, upd_tests},
       bloomSync_times
       ].
  
  groups() ->
      [{basic_tests,  [parallel], basic_tests()},
       {upd_tests,    [sequence], [{upd_bloom,    [sequence], upd_tests()},
                                   {upd_merkle,   [sequence], upd_tests()},
                                   {upd_art,      [sequence], upd_tests()}]}
      ].
  
  suite() ->
      [
  