实时计算 Flink版状态后端的相关内容

阿里云文档 2024-06-27

Gemini介绍

GeminiStateBackend是一款面向流计算场景的KV存储引擎，作为实时计算Flink版产品的默认状态存储后端（StateBackend）。本文为您介绍企业级状态后端存储GeminiStateBackend的核心设计，以及其与RocksDBStateBackend的性能对比情况。

阿里云文档 2023-10-18

企业级状态后端存储高级配置参数_实时计算 Flink版(Flink)

本文为您介绍在使用企业级状态后端存储GeminiStateBackend时，可能会用到的一些调优参数。

文章 2022-05-18 来自：开发者社区

Flink之状态后端（StateBackends）

每传入一条数据，有状态的算子任务都会读取和更新状态。由于有效的状态访问对于处理数据的低延迟至关重要，因此每个并行任务(子任务)都会在本地维护其状态，以确保快速的状态访问。状态的存储、访问以及维护，由一个可插入的组件决定，这个组件就叫做状态后端（state backend）状态后端主要负责两件事：本地的状态管理将检查点（checkpoint）状态写入远程存储（1）状态后端的分类状态....

问答 2021-12-09 来自：开发者社区

目前采用flink on yarn， flink版本是1.7.2，hadoop是2.8.5 现在遇到个问题，假设订单对象Order，因使用了窗口等，所以有状态产生，假设现在要在Order中添加几个新的字段，采用savepoint重启任务，就会报错，看错误信息是反序列化问题（rocksdb默认用的kryo），只能kill掉再重启，导致状态丢失，请问有什么解决办法吗？需求不断变更，肯定会定期增加.....

问答 2021-12-02 来自：开发者社区

flink 1.9 状态后端为FsStateBackend，修改checkpoint时出现警告

Attachment(s): ReorganizeListState.java 4 KB*来自志愿者整理的flink邮件归档

问答 2021-11-17 来自：开发者社区

Flink的状态后端RocksDB的优点是什么？

问答 2021-11-17 来自：开发者社区

Flink的状态后端JVM Heap的弊端是什么？

问答 2021-11-17 来自：开发者社区

Flink的状态后端有几种？

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更新时间 2022-11-28 15:08:08

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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