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Flink CDC我们的业务主要是交易流水如果想周期性统计交易量有什么好的方案吗要求实时的？

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Flink 周期性创建watermark，200ms的周期是怎么控制的

各位大佬，今天看flink 指派Timestamp 和watermark 的源码，发现周期性创建 watermark 确实是周期性的，从打印到控制台的时间可以看到差不多是200毫秒执行一次， 200毫秒是在哪里控制的，在debug 的调用栈找不到（源码位置）？周期新创建watermark 方法...

如何在Flink SQL中使用周期性水印?

大佬们，请教下如何在Flink SQL中使用周期性的水印。我们在消费kafka时，想设置在没有数据时水印时间也能继续向前走，用的是Flink SQL。*来自志愿者整理的flink邮件归档

flink sql目前支持周期性的水印生成方式吗？#Flink

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更新时间 2023-09-25 09:49:34

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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