anchor.diff:  delete(Object, ReqId) when is_integer(ReqId) ->
       ok = leo_metrics_req:notify(?STAT_COUNT_DEL),
       replicate_fun(?REP_LOCAL, ?CMD_DELETE,
  -                  Object#?OBJECT.addr_id, Object#?OBJECT{method   = ?CMD_DELETE,
  -                                                         data     = <<>>,
  -                                                         dsize    = 0,
  -                                                         clock    = leo_date:clock(),
  -                                                         req_id   = ReqId,
  -                                                         del      = ?DEL_TRUE});
  +                  Object#?OBJECT.addr_id,
  +                  Object#?OBJECT{method   = ?CMD_DELETE,
  +                                 data     = <<>>,
  +                                 dsize    = 0,
  +                                 clock    = leo_date:clock(),
  +                                 req_id   = ReqId,
  +                                 del      = ?DEL_TRUE});
   
   delete(Object, Ref) when is_reference(Ref) ->
       AddrId = Object#?OBJECT.addr_id,
  
positive.code:           end,
      case Ret of
          %% Put
          {ok, Ref, ETag} ->
              {ok, ETag};
          %% Delete
          {ok, Ref} ->
              ok;
  
negative.code: 
                    Token0 = leo_misc:binary_tokens(ParentDir, ?DEF_DELIMITER),
                    Token1 = leo_misc:binary_tokens(Key,       ?DEF_DELIMITER),
                    Length0 = erlang:length(Token0),
                    Length1 = Length0 + 1,
                    Length2 = erlang:length(Token1),
  