def update_node_properties
      logger.info "update_node_properties started"
      tsb = Time.now
      @source_node_properties = source.node_properties
      destination.node_properties_update(source_node_properties)
      tse = Time.now
      logger.info "update_node_properties got #{source_node_properties.size} nodes " \
                  "in #{tse - tsb}"
      destination.meta_node_properties_update(tsb, tse)
    end
def update_node_properties
      logger.info "update_node_properties started"
      tsb = Time.now
      @source_node_properties = source.node_properties
      destination.node_properties_update(source_node_properties)
      tse = Time.now
      logger.info "update_node_properties got #{source_node_properties.size} nodes " \
                  "in #{tse - tsb}"
      destination.meta_node_properties_update(tsb, tse)
    end
update node update information

 mongo: 1602 nodes in 0.42 seconds