# File lib/rubyrep/replication_run.rb, line 50
    def load_difference
      @loaders ||= LoggedChangeLoaders.new(session)
      @loaders.update # ensure the cache of change log records is up-to-date
      diff = ReplicationDifference.new @loaders
      diff.load
      unless diff.loaded? or second_chancers.empty?
        diff = second_chancers.shift
      end
      diff
    end