anchor.diff:              NewSize = max(round(BS/2), MinBS),
               application:set_env(?CLUSTER_WORKER_APP_NAME,
                   couchbase_pool_batch_size, NewSize),
  -            ?info("Decrease batch size to: ~p", NewSize),
  +            ?info("Decrease batch size to: ~p", [NewSize]),
               save_modify_batch_size_time();
           _ ->
               ok
  
positive.code:             NewSize = min(round(BS*2), MaxBS),
              application:set_env(?CLUSTER_WORKER_APP_NAME,
                  couchbase_pool_batch_size, NewSize),
              ?info("Increase batch size to: ~p", NewSize),
              save_modify_batch_size_time();
          _ ->
              ok
  
negative.code:             Responses;
          {error, etimedout} = E ->
              timeout(),
              [{Key, E} || {Key, _} <- Requests];
          {error, timeout} = E ->
              timeout(),
              [{Key, E} || {Key, _} <- Requests];
          {error, Reason} ->
              [{Key, {error, Reason}} || {Key, _} <- Requests]
      end.
  