实时计算 Flink版后端的相关内容

问答 2021-11-17 来自：开发者社区

作者：LittleMagic 截至当前，Flink 作业的状态后端仍然只有 Memory、FileSystem 和 RocksDB 三种可选，且 RocksDB 是状态数据量较大（GB 到 TB 级别）时的唯一选择。RocksDB 的性能发挥非常仰赖调优，如果全部采用默认配置，读写性能有可能会很差。但是，RocksDB 的配置也是极为复杂的，可调整的参数多达百个，没有放之四海而皆准的优化方案。....

问答 2020-06-29 来自：开发者社区

滑动窗口中的原始数据是存储在状态中的吗？如果状态后端采用RocksDB，是一开始就将状态#Flink

滑动窗口中的原始数据是存储在状态中的吗？如果状态后端采用RocksDB，是一开始就将状态数据存储在它里面了吗？是否有突破RocksDB内存限制后自动写入本地磁盘机制？如果有，能否指明下这个策略在源码哪里？#Flink

问答 2020-05-18 来自：开发者社区

flink1.10.0设置状态后端env.setStateBackend(new #Flink

flink1.10.0设置状态后端env.setStateBackend(new FsStateBackend("hdfs://91.85.daily.com:9000/user/www/flinkState", true)) 启动报错, 是需要导包吗? #Flink

问答 2020-01-03 来自：开发者社区

请教一下，flink任务不开启checkpoint的话，状态后端采用rocksdb的话，这种情况的出

请教一下，flink任务不开启checkpoint的话，状态后端采用rocksdb的话，这种情况的出来逻辑大概是什么样的呀？每条状态都读写rocksdb吗？本问题来自阿里云开发者社区的【11大垂直技术领域开发者社群】。点击这里欢迎加入感兴趣的技术领域群。

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更新时间 2025-05-07 16:01:43

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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