实时计算 Flink版lookup join聚合数据的相关内容

Flink CDC产品常见问题之Lookup Join之后再分组聚合部分数据从零开始如何解决

问题一：Flink CDC里Lookup Join之后，再分组聚合，为什么跑了两天之后有点数据开始从0聚合？ Flink CDC里Lookup Join之后，再分组聚合，为什么跑了两天之后，有点数据开始从0开始聚合了啊？有的数据是正常的，有的数据的清0了，我这边没有设置TTL，状态也会过期吗？参考...

Flink的Lookup Join之后，再分组聚合，怎么跑了两天之后，有点数据开始从0开始聚合了？

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Flink CDC里Lookup Join之后，再分组聚合，为什么跑了两天之后有点数据开始从0聚合？

Flink CDC里Lookup Join之后，再分组聚合，为什么跑了两天之后，有点数据开始从0开始聚合了啊？有的数据是正常的，有的数据的清0了，我这边没有设置TTL，状态也会过期吗？

[帮助文档] 维表JOIN语句

对于每条流式数据，可以关联一个外部维表数据源，为实时计算Flink版提供数据关联查询。

[帮助文档] 如何使用双流JOIN语句,有哪些语法和示例

Flink SQL支持对动态表进行复杂而灵活的连接操作，本文为您介绍如何使用双流JOIN语句。

[帮助文档] Join修改的可兼容性和不可兼容性详情

本文为您介绍Regular Join、Interval Join、Temporal Join和Lookup Join修改的可兼容性和不可兼容性详情。

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更新时间 2024-03-10 10:38:51

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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