实时计算 Flink版topn去重的相关内容

阿里云文档 2026-06-02

Hologres+Flink如何进行实时UV精确去重

实时UV计算主要依赖Hologres与Flink结合完成，本文将为您介绍Hologres如何进行实时UV精确去重。

问答 2024-06-09 来自：开发者社区

在Flink我用TOPN去重后的数据写到了view里，再用cumulate去累积计算就报错了为什么？

在Flink我使用TOPN去重之后的数据写到了view里面，再使用cumulate去累积计算就报错了，怎么回事？

问答 2022-07-28 来自：开发者社区

flink sql topN去重 (row_number =1 )有没有调优参数，同样的执行语句和服

flink sql topN去重 (row_number =1 )有没有调优参数，同样的执行语句和服务器配置（都是基于hive表做的去重），发现Spark SQL的执行速度快一倍以上。是不是哪些优化参数没调整到位？

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更新时间 2024-06-10 12:29:39

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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