实时计算 Flink版map 的相关内容

问答 2023-08-20 来自：开发者社区

Flink我在map里面写函数，一直报错，B cannot be cast to怎么改都不行？

Flink我在map里面写函数，一直报错，B cannot be cast to java.lang.string,怎么改都不行？用的是pyflink，1.16.2版本

问答 2023-07-18 来自：开发者社区

我现在就是想flink table api 能用上map 算子，一直没有合适的方法？自定义函数比较麻

我现在就是想flink table api 能用上map 算子，一直没有合适的方法？自定义函数比较麻烦，因为是从spark 迁移到flink 很多spark 用得很方便但是flink 很麻烦，我现在只能用stream api 去处理当有界流做不过很麻烦，flink 是如果用batch table 就没法转dataset 或者stream 么好难用？

问答 2023-07-18 来自：开发者社区

flink table api 的话用map 和flatmap 都是调用自定义函数那和selec

flink table api 的话用map 和flatmap 都是调用自定义函数那和select 感觉没啥区别啊？

问答 2023-07-13 来自：开发者社区

请问一下，flink有办法让上游数据均匀分配到下游的map算子么，试了下shuffle和rebal？

请问一下，flink有办法让上游数据均匀分配到下游的map算子么，试了下shuffle和rebalance都会有比较严重的数据倾斜？

问答 2023-06-11 来自：开发者社区

Flink cdc接oceanBase数据，初始化的时候jdbcFields格式为Map<？

问题1：Flink cdc接oceanBase数据，初始化的时候jdbcFields格式为Map , 增量的fields格式为Map，这个value的ByteString怎么转换为对应数据类型的Object？目的：是自定义反序列化类，已兼容现有代码框架，支持从mysql CDC实时抽数的部分逻辑问题2：转字符串后，字段类型也是丢失的，不好处理吧

问答 2023-01-09 来自：开发者社区

Flink 问大佬一个问题，我想给里面定义一个Map，BasicTypeInfo里面没有的，请问怎么

Flink 问大佬一个问题，我想给里面定义一个Map，BasicTypeInfo里面没有的，请问怎么办

问答 2022-08-25 来自：开发者社区

请问下Flink 用Map类型接收Kafka中的嵌套json，MySQL 用json类型接收，使用s

请问下Flink 用Map类型接收Kafka中的嵌套json，MySQL 用json类型接收，使用sql方式怎么写？

问答 2022-05-26 来自：开发者社区

flink sql 有类似 explode 的函数吗，我有个map 类型希望拆出来

flink sql 有类似 explode 的函数吗，我有个map 类型希望拆出来>

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更新时间 2024-07-27 14:15:56

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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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