实时计算 Flink版Watermark 的相关内容

问答 2021-12-06 来自：开发者社区

flink job 跑一段时间 watermark 不推进的问题

flink job 跑一段时间 watermark 不推进，任务没挂，source 是 kafka ，kafka 各个partition 均有数据， flink job statue backend 为 memory 。有debug 的姿势推荐吗？看过 CPU GC 等指标，看不出来有异常。 *来自志愿者整理的flink邮件归档

问答 2021-11-18 来自：开发者社区

flink watermark 错乱

程序运行一段时间，watermark跳到2030年: 背景:flink 1.13.1消费kafka, TumblingEventTimeWindows窗口，自定义process处理自定义sink到redis中 1.指定的watermark生成计算出来的时间戳中没有2030年的。跳到2030年后导致不会再有新的数据进入flink

问答 2021-01-05 来自：开发者社区

Flink WaterMark 处理流程是怎样的

Flink WaterMark 处理流程

问答 2021-01-05 来自：开发者社区

不知道问啥我flink1.5新集群里 waterMark出不来

文章 2017-04-05 来自：开发者社区

Flink - watermark

watermark，只有在有window的情况下才用到，所以在window operator前加上assignTimestampsAndWatermarks即可不一定需要从source发出 1. 首先，source可以发出watermark 我们就看看kafka source的实现 protected AbstractFetcher( SourceCon...

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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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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