实时计算 Flink版scala 的相关内容

返回频道实时计算 Flink版scala

问答 2022-07-25 来自：开发者社区

这一段官网例子，但是用scala 写报错，是不是scala问题呢，scala是2.11的，flink

这一段官网例子，但是用scala 写报错，是不是scala问题呢，scala是2.11的，flink是1.13.5，cdc是2.20，有没有大神看看

问答 2021-12-08 来自：开发者社区

Apache Flink中的flink-table-api-scala-bridge是什么？

问答 2021-12-08 来自：开发者社区

flink 1.13.2 在 Java/Scala 程序中调用 Python UDF函数，通过yar

HI! 我现在使用flink 1.13.2，通过java table api开发应用，其中要使用python udf函数，最终通过yarn-application方式提交；那我需要在yarn集群的机器上都安装pyflink?还是有其他方案？*来自志愿者整理的flink邮件归档

问答 2021-12-07 来自：开发者社区

flink源码编译可以不编译scala代码吗

Hi,All: 我再尝试编译flink 1.7的源码时，遇到如下错误，本人对scala不是很了解，不知道是不是版本问题引起，另外可以去掉sacla模块编译吗：本机scala版本：2.13.0 JDK 版本： 1.8.0_91 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:com....

问答 2021-12-05 来自：开发者社区

flink sql提交读取hive的批作业出现异常“scala MatchError : MAP”

作业SQL是这样的： create view 111 as select * from table1 where event_id = '0103002' and day='2020-05-13' and hour='13'; create view view_1 as select day, a.rtime as itime, a.uid as uid, trim(BOTH a.event......

问答 2021-12-03 来自：开发者社区

flink sql 使用自定义函数返回嵌套行，查询报错 scala.MatchError，为什么？

目前无法通过t.* 将嵌套的字段查询出来。 val schema = tEnv.executeSql( """ | SELECT t.* FROM ( | SELECT EvtParser(request) as t FROM parsed_nginx_log | ) |""".stripMargin).getTableSchema 其中自定义函数 EvtParser 定义如下。 @Data...

文章 2021-08-14 来自：开发者社区

Flink 项目Scala模板入门

当前的很多构建工具，可以提供项目模板来让开发人员快速初始化项目文件，这对于降低学习难度，提高项目开发效率来说，起到积极的作用。Flink项目的初始化，可以借助Maven工具来构建。在之前JDK和Maven环境搭建完成，并正确设置环境变量后，即可以用mvn archetype:generate快速生成项目文件。当前支持Scala和Java两种项目模板。下面分....

问答 2020-08-06 来自：开发者社区

flink建议用scala还是java开发？#Flink

问答 2020-06-29 来自：开发者社区

请帮忙指导一下，python开发，如果想学习flink，需要具备scala还是java开#Flink

请帮忙指导一下，python开发，如果想学习flink，需要具备scala还是java开发能力？#Flink

问答 2020-06-10 来自：开发者社区

Flink SQL的Planner使用Scala写的。为啥用Scala，在这个地方实现使#Flink

Flink SQL的Planner使用Scala写的。为啥用Scala，在这个地方实现使用Scala是有什么优势吗？ #Flink

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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