windows 安装 hadoop 3.30 记录
1、hadoop 3.30 对应的winutils下载地址 https://github.com/kontext-tech/winutils
安装参考
hadoop 3.30
https://kontext.tech/column/hadoop/447/install-hadoop-330-on-windows-10-step-by-step-guide
2、start-yarn.cmd 遇到如下错误：
yarn run v1.22.5 error Couldn't find a package.json file in "hadoop\\sbin" info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. hadoop yarn error Couldn't find a package.json file
解决参考
https://github.com/MuhammadBilalYar/Hadoop-On-Window/issues/13
https://stackoverflow.com/questions/51574920/unable-to-run-yarn-during-hadoop-installation
https://stackoverflow.com/questions/44739402/hadoop-yarn-vs-yarn-package-manager-command-conflict
主要是是由于以前做前端的时候安装了yarn,配置了环境变量，yarn的环境变量在Hadoop的环境变量前面，调整顺序运行成功
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