使用flinksql的ddl创建mysql维表,其中还用了lookup缓存,当程序运行一段时间后会报mysql链接失效问题,请问一下有知道怎么解决的吗,万分感谢,报错如下。
1、com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
2、The last packet successfully received from the server was 5,444,249 milliseconds ago. The last packet sent successfully to the server was 5,444,275 milliseconds ago.
3、Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
flink使用时态表ddl创建mysql维表报错问题
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2条回答 默认 最新
- 弥生i 2022-05-17 10:38关注
以下是建表语句
CREATE TABLE activity(
code string,
title string,
proctime as PROCTIME()
)WITH (
'connector.url' = 'jdbc:mysql://192.168.100.100:3306/ylfin?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&serverTimezone=GMT%2B8',
'connector.table' = 'activity',
'connector.type' = 'jdbc',
'connector.driver' = 'com.mysql.cj.jdbc.Driver',
'connector.lookup.cache.max-rows' = '10000',
'connector.lookup.cache.ttl' = '60s',
'connector.lookup.max-retries' = '3',
'connector.username' = 'root'," +
'connector.password' = 'hellomonitor')解决 无用评论 打赏 举报
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