实时计算 Flink版状态的相关内容

文章 2022-02-24 来自：开发者社区

美团 Flink 大作业部署与状态稳定性优化实践

摘要：本篇内容整理自美团数据平台工程师冯斐、王非凡在 Flink Forward Asia 2021 的演讲。主要内容包括：相关背景大作业部署优化Checkpoint 跨机房副本状态稳定性相关优化未来规划FFA 2021 直播回放 & 演讲 PDF 下载一、相关背景美团 Flink 的应用场景覆盖了社区定义的三种场景：应用比较多的是数据管道场景，比如数仓 ODS 层数据的实时接入，或跨数....

阿里云文档 2022-01-25

Flink线上问题汇总篇(1)-状态过期导致的sum结果负数问题

flink任务上线运行有一段时间了一直很稳定，这两天忽然发现有些“丢数据”的现象。这是怎么回事呢？用这篇文章记录一下踩坑之路。任务要求：我们这个任务要达到的效果是汇总每月的业务量，需要按照具体分类分组。业务量绝对不会出现负数的问题，但是现在汇总出来的居然存在负数！肯定是某个环节出现了问题。排查思路：我这个任务使用的是flink的table api操作比较简单。最先发现数据不正常是发现fl...

文章 2021-12-10 来自：开发者社区

Flink状态管理与Checkpoint实战——模拟电商订单计算过程中宕机的场景，探索宕机恢复时如何精准继续计算订单（下）

public class VideoOrderSourceV2 extends RichParallelSourceFunction<VideoOrder> { private volatile Boolean flag = true; private Random random = new Random(); private static List<V...

文章 2021-12-10 来自：开发者社区

Flink状态管理与Checkpoint实战——模拟电商订单计算过程中宕机的场景，探索宕机恢复时如何精准继续计算订单（上）

Flink的状态与容错是这个框架很核心的知识点。其中一致检查点也就是Checkpoints也是Flink故障恢复机制的核心，这篇文章将详细介绍Flink的状态管理和Checkpoints的概念以及在生产环境中的参数设置。什么是State状态？在使用Flink进行窗口聚合统计，排序等操作的时候，数据流的处理离不开状态管理是一个Operator的运行的状态/历史值，在内存中进行维护流程：一个算子的子....

问答 2021-12-10 来自：开发者社区

Flink CEP 编程中当状态没有到达的时候会将数据具体保存在哪里呀？

问答 2021-12-10 来自：开发者社区

Flink 中 exactly-once 语义是如何实现的，状态具体是如何存储的呀？

问答 2021-12-10 来自：开发者社区

Flink 状态机制到底是什么呢？

问答 2021-12-09 来自：开发者社区

Flink中keyed state的托管状态是怎样的?

问答 2021-12-09 来自：开发者社区

flink的状态后端机制是什么？

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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