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Flink UDF自动注册实践

5万人关注的大数据成神之路，不来了解一下吗？5万人关注的大数据成神之路，真的不来了解一下吗？5万人关注的大数据成神之路，确定真的不来了解一下吗？欢迎您关注《大数据成神之路》 1.注册UDF函数1.1 注册相关方法此处，我们使用的udf函数为标量函数，它继承的是ScalarFunction，该类在我...

flink解析复杂protobuf，注册成table遇到问题

目标：kafka protobuf--》row--》table--》sql--》hdfs。问题：protobuf是嵌套结构，转成row时，制定type出现问题。第一步：自定义反序列化方式，将protobuf转成row第二步：for循环放入row第三步：指定字段name和type时不生效因为proto...

实时数据分析：使用Flink实时发现最热Github项目

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Flink 1.5.4没有在Kubernetes中注册Google云端存储（GCS）文件系统，尽管它在docker容器中有效

我试图启动一个flink-jobmanager坚持其在GCS状态，所以我加了high-availability.storageDir: gs://BUCKET/ha一行到我flink-conf.yaml和我建立我的Dockerfile描述这里这是我的Dockerfile： FROM flink:1...

实时计算Flink > 快速入门 —— 步骤二：注册上下游存储

本页目录登录阿里云账号注册上游存储注册下游存储注册上下游存储操作步骤如下。登录阿里云账号登录阿里云账号。注册上游存储登录DataHub 登录DataHub控制台。创建DataHub源表为简化问题，我们将源源不断的数据抽象简化为如下二维表。datahub_IpPlace 字段名类...

flink 注册kafka得csv格式

用flink注册kafka得消息源，format选择csv报错,选择avro可以。是不是kafka连接器不支持csv格式。报错如下：Exception in thread "main" org.apache.flink.table.api.NoMatchingTableFactoryExceptio...

请教下，Flink里面把流注册为表: tableEnv.registerDataStream("mytable", mystream ....) 这里的流 mystream 貌似必须是append only流，不能是retraction流。这是为什么？如果是retraction流，报错Table is not an append-only table. Use the toRetractStream() in order to handle add and retract messages.

转自钉钉群21789141：请教下，Flink里面把流注册为表: tableEnv.registerDataStream("mytable", mystream ....)这里的流 mystream 貌似必须是append only流，不能是retraction流。这是为什么？如果是retracti...

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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