@Override
          @SuppressWarnings("synthetic-access")
          public void receivedStatus(OperationStatus status) {
            if (!status.isSuccess()) {
              getLogger().warn("Unsuccessful stat fetch: %s", status);
            }
          }
Get a set of stats from all connections.

@param arg which stats to get
@return a Map of the server SocketAddress to a map of String stat keys to
        String stat values.
@throws IllegalStateException in the rare circumstance where queue is too
          full to accept any more requests
src/main/java/net/spy/memcached/MemcachedClient.java