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问答 2024-07-31 来自：开发者社区

在Flink CDC中，我加了那个参数，初始化拉取的时候是返回了clob类型的数据，增量变更数据？

在Flink CDC中，我加了那个参数，初始化拉取的时候是返回了clob类型的数据，增量变更数据，返回__debezium_unavailable_value这么个数据，怎么解决？

阿里云文档 2023-09-27

Raw格式的使用方法和类型映射_实时计算 Flink版(Flink)

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问答 2023-07-02 来自：开发者社区

请问下 flink cdc 全量初始化mysql表时，主键是字符串类型同步很慢，这个需要咋优化配置？

请问下 flink cdc 全量初始化mysql表时，主键是字符串类型同步很慢，这个需要咋优化配置参数？目前我设置了 chunk size 4k-10w之间变化不明显，速度很慢1-2K/s，如果主键时bigiint 没啥问题？

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更新时间 2024-08-01 15:09:53

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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