摘要：报错如下： The root scratch dir: /tmp/hive on HDFS should be writable. Current permissions are: Caused by: java.lang.RuntimeException: The root scratch dir 阅读全文

摘要：自己在路径访问明细表开发时，写的sql如下 SELECT guid, sessionid, event['url'] as page, `timestamp` as ts, row_number() over(PARTITION BY guid,sessionid ORDER BY `timesta 阅读全文

摘要：linux-centos的安装 检查电脑是否开启虚拟化，只有开启虚拟化才能安装虚拟机 新建虚拟机 鼠标点进去，选中红框所示，回车 登录: 输入默认用户名(超级管理员 root) 密码:安装时设置的密码 阅读全文