anchor.diff:      KVs = lists:sort(ns_config:get_kv_list()),
       Keys = [K || {K, _} <- KVs],
       do_push_keys(Keys, KVs);
  -accumulate_push_keys_and_get_config(Keys0, RetriesLeft) ->
  +accumulate_and_push_keys(Keys0, RetriesLeft) ->
       Keys = accumulate_push_keys(Keys0),
       AllConfigKV = ns_config:get_kv_list(),
       %% the following ensures that all queued ns_config_events_local
  
positive.code:     end.
  
  handle_info({push_keys, Keys0}, State) ->
      accumulate_push_keys_and_get_config(Keys0, 10),
      {noreply, State};
  handle_info({pull_and_push, Nodes}, State) ->
      ?log_info("Replicating config to/from:~n~p", [Nodes]),
  
negative.code:             %% ordering of these messages is irrelevant so we can
              %% resend and retry
              self() ! Msg,
              accumulate_and_push_keys(Keys, RetriesLeft-1)
      after 0 ->
              %% we know that AllConfigKV has exactly changes we've seen
              %% with {push_keys, ...}. I.e. there's no way config
  