anchor.diff:      {ok, Acc};
   get_chunked_object_key_list(CIndex, ParentKey, Acc) ->
       IndexBin = list_to_binary(integer_to_list(CIndex)),
  -    Key    = << ParentKey/binary, "\n", IndexBin/binary >>,
  +    Key = << ParentKey/binary, "\n", IndexBin/binary >>,
       AddrId = leo_redundant_manager_chash:vnode_id(Key),
   
       case leo_storage_handler_object:head(AddrId, Key) of
  
positive.code:                                       Cause::any()).
  delete({Object, Ref}) ->
      AddrId = Object#?OBJECT.addr_id,
      Key    = Object#?OBJECT.key,
  
      case leo_object_storage_api:head({AddrId, Key}) of
          {ok, MetaBin} ->
  
negative.code:     ok;
  delete_chunked_objects(CIndex, ParentKey) ->
      IndexBin = list_to_binary(integer_to_list(CIndex)),
      Key = << ParentKey/binary, "\n", IndexBin/binary >>,
      AddrId = leo_redundant_manager_chash:vnode_id(Key),
  
      case leo_storage_handler_object:head(AddrId, Key) of
  