实时计算 Flink版cdc窗口聚合的相关内容

阿里云文档 2024-08-15

Flink CDC写入MaxCompute

MaxCompute为您提供对接Flink CDC的新版插件Connector连接器。您可以通过对接Flink CDC，将数据源（例如MySQL）数据实时同步至MaxCompute的目标表（普通表或Delta表）。本文为您介绍MaxCompute新版插件的能力支持情况与主要操作流程。

阿里云文档 2024-07-26

实时计算 Flink版产品使用问题之如何对CDC数据进行窗口分组和聚合操作

问题一：Flink CDC里cdc后面是不是不能接窗口函数呢？ Flink CDC里cdc后面是不是不能接窗口函数呢？参考答案： Flink CDC中的CDC源表不支持直接使用窗口函数。如果需要对CDC数据进行窗口分组和聚合操作，可以在捕获到CDC数据后，使用Flink的窗口和开窗函数来处理最终的聚合结果。在Flink中，CDC（Chang...

阿里云文档 2024-06-28

社区CDC

本文为您介绍如何在阿里云实时计算Flink版中使用社区版CDC（Change Data Capture）连接器，以及更改连接器名称。

文章 2024-02-23 来自：开发者社区

Flink CDC 数据源问题之不支持窗口聚合如何解决

问题一：cdc数据源还不支持窗口聚合吗？ cdc数据源还不支持窗口聚合吗？#Flink 参考回答： CDC数据出来是一个Changelog流，没法做窗口聚合关于本问题的...

问答 2023-10-31 来自：开发者社区

Flink CDC那位之前用过滚动窗口设置水位线进行聚合计算呢？

Flink CDC那位大佬之前用过滚动窗口设置水位线进行聚合计算呢？ public void onPeriodicEmit(WatermarkOutput output) { output.emitWatermark(new Watermark(currentMaxTimestamp - maxOutOfOrderness)); }重写设置水位线的方法发现一个问题大部...

问答 2023-06-18 来自：开发者社区

Flink CDC中刚才看了下文档，如果要做窗口聚合，这边就是取增量数据的ts时间＋表名做开窗就行？

Flink CDC中刚才看了下文档，如果要做窗口聚合，这边就是取增量数据的ts时间＋表名做开窗就行了是吗？？我这边一共是有四张表

问答 2023-06-18 来自：开发者社区

老哥，我有个问题。如果Flink CDC不能设置水位线，那sql坐的窗口聚合，也就不能按水位线时事？

老哥，我有个问题。如果Flink CDC不能设置水位线，那sql坐的窗口聚合，也就不能按水位线（比如1s宽度）时事计算了？

阿里云文档 2023-03-06

如何使用FlinkCDC将MySQL数据同步至EMRServerlessStarRocks

本文为您介绍如何使用Flink CDC将MySQL数据同步至EMR Serverless StarRocks中。

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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。

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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