实时计算 Flink版缓存的相关内容

文章 2024-08-19 来自：开发者社区

实时计算 Flink版产品使用问题之怎么手动清理缓存或废弃文件

问题一：flink任务重启时指定从6月5号某时开始执行，但数据看不到这段时间的是怎么回事？ flink任务重启时指定从6月5号某时开始执行，但数据看不到这段时间的是怎么回事？参考答案： Flink任务重启通常不会从特定时间点开始重新处理数据，而是从故障点或检查点恢复。若要处理特定时间点的历史数据，您需要配置状态恢复和时间戳/水印策略。检查作业配置...

文章 2024-07-16 来自：开发者社区

实时计算 Flink版产品使用问题之缓存内存占用较大一般是什么导致的

问题一：Flink CDC里racle 全量阶段是通过 log 获取数据吗？ Flink CDC里racle 全量阶段是通过 log 获取数据吗？参考答案：先select再捕捉binlog，是正常的。关于本问题的更多回答可点击进行查看： https://developer.aliyun.com/ask/5923...

问答 2024-06-16 来自：开发者社区

Flink CDC里任务运行时间过长 cache缓存占用了大量资源，有没有具体数值可以参考？

Flink CDC里任务运行时间过长 cache缓存占用了大量资源我想让cache资源自动释放或者减少使用内存是它回答的这样嘛设置状态后端最大值如果设置了这个会不会导致任务有可能找不到状态报错有没有具体的参数值可以参考下?

问答 2024-01-04 来自：开发者社区

flink1.14的网络缓存消胀机制，如果只是逻辑减少buffer的大小，这是不是会导致内存浪费?

flink1.14的网络缓存消胀机制，如果只是逻辑减少buffer的大小，并物理的大小不变，这是不是会导致内存浪费?它是会改变所有的subtask的buffer大小吗？还是只有某个subtask？

问答 2023-12-10 来自：开发者社区

Flink CDC在DataStream 可以用redis来缓存维表。有办法实现这个功能吗？

Flink CDC在DataStream 可以用redis来缓存维表。。。在flink sql中，有办法实现这个功能吗？Lookup Join 不知道怎么去用redis缓存，还有更新缓存？

问答 2023-12-10 来自：开发者社区

flink 这个缓存受table.exec.state.ttl 这个参数控制吗？

flink sql 里面的row number 取topn，这个缓存受table.exec.state.ttl 这个参数控制吗？

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更新时间 2024-08-20 14:06:04

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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