访问hadoop官网，选择2.10.1
然后就进入到
这时更改URL即可：Apache DownloadsHome page of The Apache Software Foundationhttps://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-2.10.1/hadoop-2.10.1.tar.gz 将2.10.1改为你想要的版本，比如2.7.1
Apache Download Mirrorshttps://www.apache.org/dyn/closer.cgi/hadoop/common/hadoop-2.7.1/hadoop-2.7.1.tar.gz
点击红框内的即可下载！
