实时计算 Flink版watermark概念的相关内容

文章 2024-02-20 来自：开发者社区

【天衍系列 03】深入理解Flink的Watermark：实时流处理的时间概念与乱序处理

01 基本概念 Watermark 是用于处理事件时间的一种机制，用于表示事件时间流的进展。在流处理中，由于事件到达的顺序和延迟，系统需要一种机制来衡量事件时间的进展，以便正确触发窗口操作等。Watermark 就是用来标记事件时间的进展情况的一种特殊数据元素。 02 工作原理 Watermark 的生成方式通常是由系统根据数据流中的事件来自动推断生成的。一般来说，系统会...

问答 2021-12-09 来自：开发者社区

Flink中watermark的概念具体是些什么啊？

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更新时间 2024-02-21 09:19:33

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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