https://blog.youkuaiyun.com/github_35963425zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/github_35963425/article/details/52823931https://blog.youkuaiyun.com/github_35963425/article/details/52823931github_35963425Sat, 15 Oct 2016 16:43:12 +0800 Operations）也是一个重大的特色。 一般Aggregate Operations（聚合操作）也被称作流]]>