实时计算 Flink版自定义的相关内容

问答 2019-02-14 来自：开发者社区

flink 有timewindow 还有 countwindow 是否可以自定义实现 countTimeWindow 如果先满足count 就出发不然就出发时间window

转自钉钉群21789141：flink 有timewindow 还有 countwindow 是否可以自定义实现 countTimeWindow 如果先满足count 就出发不然就出发时间window

问答 2018-12-14 来自：开发者社区

Apache Flink：自定义触发器意外行为

Apache Flink：自定义触发器意外行为我有一个DataStream，它由一个事件组成，该事件具有一个表示一批生成元素的属性。该属性，我们称之为'batchNumber'，在我从同一生产批次中摄取的每个事件中都是恒定的。我每批收到多个事件。我想在'batchNumber'更改时分析批处理中的机器性能。我的方法是使用全局流并使用'batchNumber'作为密钥对其进行分区。我希望这会将全....

问答 2018-12-06 来自：开发者社区

在AWS EMR中部署Flink自定义JAR文件时出错

基本上我想将Flink自定义JAR文件部署到新的AWS EMR集群。以下是我所做的总结。我创建了一个新的AWS EMR集群。第1步：软件和步骤更改 -使用flink作为服务创建AWS EMR集群。（EMR发布版本 - 5.17.0）并单击Flink 1.5.2作为软件配置。输入配置JSON： -[{“Classification”：“flink-conf”，“Properties”：{“jobm....

问答 2018-11-28 来自：开发者社区

在Apache Flink中将自定义类写入HDFS

"在开始使用Spark之后，我试图熟悉Flink的语义。我想DataSet[IndexNode]在HDFS中写一个持久存储，以便以后可以通过另一个进程读取它。Spark有一个ObjectFile提供这种功能的简单API，但我在Flink中找不到类似的选项。case class IndexNode(vec: Vector[IndexNode], id: Int) e...

问答 2018-11-22 来自：开发者社区

Flink的State使用时。如果应用在更新时，修改了POJO类，或者算子之间传递的POJO发生变更，需要怎样去迁移呢？只能通过自定义其他的序列化方式么？

问答 2018-10-10 来自：开发者社区

我们想把业务处理做成插件，然后每个job的main都是一个，通过动态load业务自定义jar，但flink这种结构做起来很麻烦，我不得不写了个重新打包的功能，你们blink是怎么实现这个功能的？

转自钉钉群21789141：我们想把业务处理做成插件，然后每个job的main都是一个，通过动态load业务自定义jar，但flink这种结构做起来很麻烦，我不得不写了个重新打包的功能，你们blink是怎么实现这个功能的？

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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