解决hive警告：
Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.、
不建议在没有服务器身份验证的情况下建立SSL连接。根据MySQL 5.5.45 +、5.626+和5.7.6+的要求，如果没有设置显式选项，默认情况下必须建立SSL连接。对于不使用SSL的现有应用程序，ValuyServer证书属性设置为“false”。您需要通过设置USESL= false来显式禁用SSL，或者设置USELS=true，并为服务器证书验证提供信任存储。
配置更改hive的 conf目录下hive-site.xml配置信息添加useSSL=false如下图
