Flink CDC里flinksql 维表join ，主表同一条数据3s内连续变更，维表字段会关联出很久以前的数据，这种是什么情况造成的呢？create table source_trade_order_test1 ( schema STRING , table STRING , action string, columns ARRAY>, ...

文章 2024-05-17 来自：开发者社区

实时计算 Flink版产品使用合集之flinksql多流join，left右边任意一张表数据到后，是否都会更新test中对应的数

问题一：Flink CDC我这里多出来的10G是怎么回事？ Flink CDC我这里多出来的10G是怎么回事？参考回答：看看并行度关于本问题的更多回答可点击原文查看：http...

问答 2023-07-25 来自：开发者社区

大佬们，我想请问下，Flink中我是用flinksql进行批处理操作，在left join的时候会？

大佬们，我想请问下，Flink中我是用flinksql进行批处理操作，在left join的时候会产生回撤流，这是不是flink批处理不是特别友好呀？我这边也是使用的execution.runtime-mode=BATCH,但是还是会产生回撤流

问答 2023-06-04 来自：开发者社区

大佬们请教一个Flink CDC问题，在使用flinksql的时候，主流数据需要join 好多维？

大佬们请教一个Flink CDC问题，在使用flinksql的时候，主流数据需要join 好多维度表，频繁查询导致维度表的数据库QPS压力凸增，大佬们有什么好的解决办法吗？

问答 2022-02-15 来自：开发者社区

Flink1.10 flinksql 多表join状态ttl不成功的问题

http://apache-flink.147419.n8.nabble.com/file/t447/ttl.png 我用flink sql 设置了空闲状态的清理时间，但是状态还是一直增加，里面有多次 group by 和多次流表的关联。代码如下： tEnv.getConfig() .setIdleStateRetentionTime(Time.hours(minIdleStateR....

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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