flink连接mysql，在过了一定时间后，就断开连接了
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 52,445,041 milliseconds ago. The last packet sent successfully to the server was 52,445,045 milliseconds ago. is longer than the server configured value of'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, orusing the Connector/J connection property 'autoReconnect=true' to avoid this problem.
flink连接mysql，在过了一定时间后，就断开连接了，设置'autoReconnect=true’也不管用*来自志愿者整理的flink邮件归档
写回答
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如果是mysql5.x以上的版本，url中autoReconnect参数会无效吧，
可以尝试下修改配置文件wait_timeout/interactive_out参数*来自志愿者整理的flink
2021-12-07 20:16:38赞同 展开评论 打赏
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