lucky-peach的博客报错详情: Cause: com.mysql.cj.jdbc.exceptions.PacketTooBigException: Packet for query is too large (2,366 > 1,024). You can change this value on the server by setting the 'max_allowed_packet' ...
凉凉凉jlu的博客报错: org.apache.hadoop.hive.metastore.HiveMetaException: Failed to get schema version. Underlying cause:com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 简单来说...
大数据侠客的博客针对mysql8.0报错:com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not creat。原来用的是5.1.37的驱动。数据库是mysql5.7,可以连接成功。换成了下边这个驱动就OK了。瞬间心情好了...
The wind of freedom blows的博客配置文件中的url不正确(排除) jdbc:mysql://localhost:3306/env 2.mysql的连接等待时间默认为8小时,28800秒(不太可能因为这个,毕竟程序启动还没多久) 如果要将mysql的全局变量wait_timeout的值修改为最大。...