实时计算 Flink版exactly once 的相关内容

问答 2024-06-02 来自：开发者社区

Flink exactly once需要Barrier对齐吗

问答 2024-02-06 来自：开发者社区

Flink CDC里tidb 支持exactly once 这个bug啥时修复？

文章 2023-12-27 来自：开发者社区

读Flink源码谈设计：Exactly Once

本文首发于泊浮目的语雀:https://www.yuque.com/17sing 版本日期备注 1.0 2022.2.2 文章首发 1.1 2022.2.14 更新3.4部分，增强注释部分 1.2 2022.2.27 更新3.6部分，删除部分对于1.14版本不...

问答 2023-01-15 来自：开发者社区

Flink CDC为了保证数据一致性，其中写入Kafka必须是Exactly Once吗？

Flink CDC消费MySQL写入到Kafka，再消费Kafka到另一个MySQL。为了保证数据一致性，其中写入Kafka必须是Exactly Once，还是At Least Once就可以？（因为binlog是ROW模式，即便是数据重复，只要保证数据顺序，是不是结果就是一致的？）

问答 2022-11-22 来自：开发者社区

flink任务每次重启的时候会丢失一些数据，请问大家有遇到过吗？设置了exactly - once，

flink任务每次重启的时候会丢失一些数据，请问大家有遇到过吗？设置了exactly - once，跟我杀死job的时候和重启没有用savepoint，有关系吗？

文章 2022-09-02 来自：开发者社区

技术解析｜Doris Connector 结合 Flink CDC 实现 MySQL 分库分表 Exactly Once 精准接入

本篇文档将演示如何使用 Apache Doris Flink Connector 结合 Flink CDC 以及 Doris Stream Load 的两阶段提交，实现 MySQL 数据库分库分表实时高效接入，并实现 Exactly Once。一、概述在实际业务系统中为了解决单表数据量大带来的各种问题，我们通常采用分库分表的方式对库表进行拆分，以达到提高系统的吞吐量。但是这样给后面数据分析带来了....

问答 2021-12-07 来自：开发者社区

Apache中Flink提供的Exactly once的一致性保证是什么意思？

Apache中Flink提供的Exactly once（严格一次）的一致性保证是什么意思？

问答 2021-12-06 来自：开发者社区

Flink连接器这块，如果是sink到mysql,ES等，有对应的实现exactly once语义么

Flink连接器这块，如果是sink到mysql,ES等，有对应的实现exactly once语义么? 比如kafka的连接有sink的exactly once语义,sink时候指定即可. 那么,如果是mysql后者其他的有么? 谢谢. return new FlinkKafkaProducer011<>( "topic", new KeyedSerializationSchemaWr...

问答 2020-07-28 来自：开发者社区

Flink sink kafka EXACTLY ONCE 执行checkpoint失败

#环境 Flink 版本： 1.10.1 kafka 版本：2.12-2.2.2 DAG:source kafka->etl->sink kafka 在at least once模式下运行正常，改为extractly once执行checkpoint每次都不成功。 #配置尝试过增加以下配置： props.setProperty(ProducerConfig.TRANSACTION_T...

问答 2020-07-06 来自：开发者社区

flink EXACTLY ONCE该怎么理解呢？如果checkpoint 10秒一次#Flink

flink EXACTLY ONCE该怎么理解呢？如果checkpoint 10秒一次，那在第九秒系统崩溃，那这9秒内的数据不是又会重新消费？#Flink

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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