实时计算 Flink版 job 的相关内容

问答 2021-12-07 来自：开发者社区

Flink Job的提交流程用户提交的Flink Job会被转化成一个DAG任务运行，分别是什么？

问答 2021-12-07 来自：开发者社区

flink on yarn 的application模式怎么提交多个job组成应用程序呢？

1.flink on yarn 的application模式怎么提交多个job组成应用程序呢？在官网和论坛的文章中这里没有详细展开。与per-job 模式相比，Application 模式允许提交由多个Job组成的应用程序。Job执行的顺序不受部署模式的影响，但受启动Job的调用的影响。使用阻塞的 execute()方法，将是一个顺序执行的效果，结果就是"下一个"Job的执行被推迟到“该”J.....

问答 2021-12-07 来自：开发者社区

flink的job运行一段时间后， checkpoint就一直失败

ID Status Acknowledged Trigger Time Latest Acknowledgement End to End Duration State Size Buffered During Alignment 295 FAILED 30/5011:55:3811:55:391h 0m 0s205 KB0 B Checkpoint Detail: Path: - Discar....

问答 2021-12-07 来自：开发者社区

flink web UI job overview 中的算子记录条数不更新

Hello,麻烦问下，为啥算子链默认合并之后，数据更新，算子对应的接收和发送记录数不更新，一直显示为0. 图片发送了看不到，请看附件*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如何实现Job间的协同联系？

大家好，我这边想做一个实时数仓项目。但随着Flink间Job的数量越来越多，发现很多Job之间的代码存在大量的重复，且迫切需要一个类似于Batch的中间层解决方案来减少冗余，增加整体的清晰度和层次感。我这边能想到的解决方案是：采用Kafka作为Job之间的联系纽带，例如有两个Job Job_1: 从原始kafka topic TOPIC_ORIG获取数据, 进行一定的业务逻辑处理后，写到另一....

问答 2021-12-07 来自：开发者社区

Flink Job 监控

各位好！请教下各位，Flink Job 在生产上运行时，关于job运行状态的监控和告警一般是采用什么方案处理的？比如监控job是否在正常运行，如果发现job 挂掉了或者重启了就进行告警。我这边有将一些metric 推到prometheus 但是好像没有发现关于job是否挂掉的metric。希望有做过这种方案的朋友能赐教下，谢谢了！！*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 1.11 submit job timed out

使用版本Flink 1.11，部署方式 kubernetes session。 TM个数30个，每个TM 4个slot。 job 并行度120.提交作业的时候出现大量的No hostname could be resolved for the IP address，JM time out，作业提交失败。web ui也会卡主无响应。用wordCount，并行度只有1提交也会刷，no hostn.....

问答 2021-12-07 来自：开发者社区

flink 聚合 job 重启问题

请教个问题，我通过程序拉取kafka消息后，注册为flink流表。然后执行sql: "select user_id, count(*)cnt from 流表"，将结果写入到mysql 聚合表中（SINK组件为：flink1.11版本JdbcUpsertTableSink)。但问题是，每次JOB重启后，之前mysql 聚合表结果会被清空。我设置了checkpoint和racksdbbacken....

问答 2021-12-06 来自：开发者社区

job已经跑起来了，但是flink的ui页面卡住了是什么原因？

job已经跑起来了，但是flink的ui页面卡住了，一直出不来。又遇到过这个问题的么。是什么原因。 *来自志愿者整理的flink邮件归档

问答 2021-12-06 来自：开发者社区

flink sql job 提交到yarn上报错怎么办？

org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to initialize the cluster entrypoint YarnJobClusterEntrypoint. at org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCl.....

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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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MySQL 到 Hologres

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开源Flink对比

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