我们在Flink Standalone 上测试 flink cdc 同步mysql历史数据的时候，当表不存在或者连接mysql超时的时候，数据同步任务会失败，同时jobmanger进程也会退出。我们准备在启动任务之前先进行mysql连接可用性和表不存在的检测。不知道大家有没有遇到过类似的问题，又是如何解决的

问答 2022-11-03 来自：开发者社区

flink cdc 同步mysql数据库时全量阶段出现读取快照失败连接重置的异常导致应用重

，之前报的异常提示需要增加数据库的wait_timeout 时长原本180s修改成7200s 但是测试同步到50分钟还是出现了连接重置的情况 java.lang.RuntimeException: One or more fetchers have encountered excepti...

问答 2022-10-31 来自：开发者社区

flink cdc 2.0 是分片机制，全量同步，怎么保障顺序同步？状态需要顺序的

问答 2022-10-31 来自：开发者社区

flink 15版本cdc connector同步mysql的数据，本地能拉取到数据，打jar包之后

flink 15版本cdc connector同步mysql的数据，本地能拉取到数据，打jar包之后提交就拉取不到变更数据了，而且看不到错误日志？有人遇到过这个情况吗？

问答 2022-10-30 来自：开发者社区

flink cdc 2.2同步Tidb，tidb数据库用户有相关权限要求吗？

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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

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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