anchor.diff:  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   content_check(_Value, _WriteFilter, _Cookie) ->
       {true, null}.
  -
  -iter(_Fun, 0) ->
  -    ok;
  -iter(Fun, 1) ->
  -    Fun(), ok;
  -iter(Fun, Count) ->
  -    Fun(),
  -    iter(Fun, Count - 1).
  
positive.code:     proto_sched:cleanup().
  
  test_qwrite_qwrite_qread(_Config) ->
      iter(fun qwrite_qwrite_qread/0, 500).
  
  qwrite_qwrite_qread() ->
      DB = lease_db1,
      ContentCheck = fun content_check/3,
      Self = comm:reply_as(self(), 2, {test_rbr, '_'}),
  
negative.code:     Config.
  
  test_kv_on_cseq_write_2(_Config) ->
      util:for_to(1, 500, fun kv_on_cseq_write/1).
  
  kv_on_cseq_write(_I) ->
      proto_sched:start(),
      Pid = self(),
      spawn(fun() ->
  