实时计算 Flink版快手window 的相关内容

文章 2024-08-22 来自：开发者社区

Flink SQL 在快手实践问题之Group Window Aggregate 中的数据倾斜问题如何解决

问题一：数据倾斜在实时计算中可能带来哪些问题？数据倾斜在实时计算中可能带来哪些问题？参考回答：数据倾斜在实时计算中可能带来指标延迟或数据事故等问题。当实时计算任务遇到数据倾斜时，部分节点可能会处理过多的数据，导致处理速度下降，进而影响整个任务的完成时间和数据准确性。关于本问题的更多问答可点击原文查看： https://...

文章 2024-08-22 来自：开发者社区

Flink SQL 在快手实践问题之设置 Window Offset 以调整窗口划分如何解决

问题一：Window Offset 的主要作用是什么？ Window Offset 的主要作用是什么？参考回答： Window Offset 主要用来调整窗口的划分逻辑，它是一个可选参数，默认值为 0，表示以 unix 时间的零点作为窗口划分的起始时间。其值可以是正数或负数，分别表示向右或向左偏移窗口的起始时间。但它不会影响 watermark 的生...

文章 2024-08-22 来自：开发者社区

Flink SQL 在快手实践问题之使用Dynamic Cumulate Window绘制直播间累计UV曲线如何解决

问题一：CUMULATE窗口函数相比传统方案有哪些优点？ CUMULATE窗口函数相比传统方案有哪些优点？参考回答： CUMULATE窗口函数的优点包括使用窗口结束时间作为横坐标，确保每个点的纵坐标是对应时间点的累计值，使曲线在回溯历史或作业failover时都能完全还原，且分维度值相加等于总维度值；同时，使用两阶段聚合防止distinct key倾...

文章 2024-08-22 来自：开发者社区

Flink SQL 在快手实践问题之Window TVF改进窗口聚合功能如何解决

问题一：Group Window Aggregate在Flink中有哪些局限性？ Group Window Aggregate在Flink中有哪些局限性？参考回答： Group Window Aggregate在Flink 1.12及更早版本中用于窗口聚合，但其存在两个主要局限性：一是语法不符合SQL标准，需要借助特殊窗口函数和窗口辅助函数；二是窗口...

阿里云文档 2024-08-02

WindowTVF变更兼容性

本文为您介绍Window TVF变更的可兼容性和不可兼容性详情。

阿里云文档 2024-07-17

WindowTop-N变更兼容性

Window TOP-N需要同时遵循Window TVF和Top-N两者的修改要求，支持的兼容性修改较少。本文为您介绍Window Top-N变更的可兼容性和不可兼容性详情。

阿里云文档 2024-07-11

GroupWindowAggregate变更兼容性

本文为您介绍Group Window Aggregate变更的可兼容性和不可兼容性详情。

共有7条

< 1 >

跳转至： GO

更新时间 2024-08-23 12:08:50

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

实时计算 Flink版您可能感兴趣

产品推荐

{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":7,"count":7}]},"card":[{"des":"阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，基于开源的Apache Flink，优化后成熟稳定的企业版本，提供批流统一、完全托管、高性能的实时智能计算平台。","link1":"https://www.aliyun.com/product/bigdata/product/sc","link":"https://www.aliyun.com/product/bigdata/product/sc","icon":"https://img.alicdn.com/tfs/TB1yy8cD4D1gK0jSZFyXXciOVXa-200-200.png","btn2":"产品文档","tip":"阿里云实时计算推出独享模式，专属定制的计算大脑，2折试用，<a href=\" https://yq.aliyun.com/live/591\" target=\"_blank\">观看发布会</a>          最新产品和实时动态重磅发布 ，<a href=\"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716\" target=\"_blank\">立即查看</a>","btn1":"立即开通","link2":"https://help.aliyun.com/product/45029.html","title":"实时计算Flink版"}],"search":[{"txt":"申请免费试用","link":"https://help.aliyun.com/document_detail/72329.html?spm"},{"txt":"管理控制台","link":"https://stream.console.aliyun.com/zh/dark/"},{"txt":"产品文档介绍","link":"https://help.aliyun.com/document_detail/62438.html?spm"},{"txt":"独享模式价格计算器","link":"https://stream.console.aliyun.com/zh/dark/#/profile/calculator"},{"txt":"独享模式2折试用","link":"https://promotion.aliyun.com/ntms/act/rc.html"},{"txt":"技术解读","link":"https://yq.aliyun.com/articles/669177"},{"txt":"产品动态","link":"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"sc","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","title":"实时计算Flink版","des":"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。","btn1":"立即开通","link1":"https://www.aliyun.com/product/bigdata/product/sc","btn3":"产品文档","link3":"https://help.aliyun.com/product/45029.html","btn2":"产品控制台","link2":"https://realtime-compute.console.aliyun.com/#/dashboard","infoGroup":[{"infoName":"实时同步","infoContent":{"firstContentName":"MySQL 到 Hologres","firstContentLink":"https://help.aliyun.com/document_detail/374270.html","lastContentName":"Kafka 到 Hologres","lastContentLink":"https://help.aliyun.com/document_detail/417217.html"}},{"infoName":"功能对比","infoContent":{"firstContentName":"开源Flink对比","firstContentLink":"https://developer.aliyun.com/article/784034?spm=5176.15088477.J_3921126020.9.1a951708XMCptN"}},{"infoName":"成本优化","infoContent":{"firstContentName":"作业自动调优","firstContentLink":"https://help.aliyun.com/document_detail/212422.html","lastContentName":"","lastContentLink":""}},{"infoName":"学习资料","infoContent":{"firstContentName":"实时数仓入门课程","firstContentLink":"https://developer.aliyun.com/learning/course/807?spm=5176.15088477.J_3921126020.7.1a951708XMCptN"}}],"contentLink":"https://www.aliyun.com/product/bigdata/sc"}]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":7,"count":7}]},"card":[{"des":"阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，基于开源的Apache Flink，优化后成熟稳定的企业版本，提供批流统一、完全托管、高性能的实时智能计算平台。","link1":"https://www.aliyun.com/product/bigdata/product/sc","link":"https://www.aliyun.com/product/bigdata/product/sc","icon":"https://img.alicdn.com/tfs/TB1yy8cD4D1gK0jSZFyXXciOVXa-200-200.png","btn2":"产品文档","tip":"阿里云实时计算推出独享模式，专属定制的计算大脑，2折试用，<a href=\" https://yq.aliyun.com/live/591\" target=\"_blank\">观看发布会</a>          最新产品和实时动态重磅发布 ，<a href=\"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716\" target=\"_blank\">立即查看</a>","btn1":"立即开通","link2":"https://help.aliyun.com/product/45029.html","title":"实时计算Flink版"}],"search":[{"txt":"申请免费试用","link":"https://help.aliyun.com/document_detail/72329.html?spm"},{"txt":"管理控制台","link":"https://stream.console.aliyun.com/zh/dark/"},{"txt":"产品文档介绍","link":"https://help.aliyun.com/document_detail/62438.html?spm"},{"txt":"独享模式价格计算器","link":"https://stream.console.aliyun.com/zh/dark/#/profile/calculator"},{"txt":"独享模式2折试用","link":"https://promotion.aliyun.com/ntms/act/rc.html"},{"txt":"技术解读","link":"https://yq.aliyun.com/articles/669177"},{"txt":"产品动态","link":"https://www.aliyun.com/product/new?source_type=out_sousuo_feature_0716"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"sc","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","title":"实时计算Flink版","des":"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。","btn1":"立即开通","link1":"https://www.aliyun.com/product/bigdata/product/sc","btn3":"产品文档","link3":"https://help.aliyun.com/product/45029.html","btn2":"产品控制台","link2":"https://realtime-compute.console.aliyun.com/#/dashboard","infoGroup":[{"infoName":"实时同步","infoContent":{"firstContentName":"MySQL 到 Hologres","firstContentLink":"https://help.aliyun.com/document_detail/374270.html","lastContentName":"Kafka 到 Hologres","lastContentLink":"https://help.aliyun.com/document_detail/417217.html"}},{"infoName":"功能对比","infoContent":{"firstContentName":"开源Flink对比","firstContentLink":"https://developer.aliyun.com/article/784034?spm=5176.15088477.J_3921126020.9.1a951708XMCptN"}},{"infoName":"成本优化","infoContent":{"firstContentName":"作业自动调优","firstContentLink":"https://help.aliyun.com/document_detail/212422.html","lastContentName":"","lastContentLink":""}},{"infoName":"学习资料","infoContent":{"firstContentName":"实时数仓入门课程","firstContentLink":"https://developer.aliyun.com/learning/course/807?spm=5176.15088477.J_3921126020.7.1a951708XMCptN"}}],"contentLink":"https://www.aliyun.com/product/bigdata/sc"}]}}

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