selenium grid 中的“-role node”和“-role webdriver”有什么区别?
IE
有什么区别吗
java -jar selenium-server-standalone-2.16.0.jar -role node -hub http://abcd:4444/grid/register
和
java -jar selenium-server-standalone-2.16.0.jar -role webdriver -hub http://abcd:4444/grid/register
?