flink cdc 2.2 升级 2.3， 2.2的时候运行一切正常，升级到2.3后，无论连接几个库，每个库同步20张表后，都会报SQLTransientConnectionException: connection-pool-10.200.10.56:3316 - Connection is not available, request timed out after 30000ms，cdc2....

问答 2023-02-06 来自：开发者社区

Flink cdc代码的方式结合mybatis读mysql运行一段时间报连接数据库超时的问题怎么解决

请教大佬们，Flink cdc代码的方式结合mybatis读mysql运行一段时间总是报连接数据库超时的问题： org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: com.mysql.cj.jdbc.exceptions.CommunicationsException: The l.....

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

立即开通

产品控制台

产品文档

实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优