WebJan 14, 2024 · 即使使用了 RETAIN_ON_CANCELLATION 命令,当使用 flink stop 命令来停止任务时也会删除Checkpoint 目录,这是因为这个机制是适用于使用 cancel 命令取消 … WebJan 14, 2024 · 接上文:Flink笔记(十八):Flink 之 StateBackend 介绍 & 使用,本文介绍 Flink 从 Checkpoint 中恢复数据。 当 Flink 任务提交后,只有遇到 1.程序错误、2.人为 Cancel掉,任务就会停止。 1. 任务异常,设置保存 CheckPoint 中途数据不被删除 如果现在有个任务已经执行很长时间,这样就突然停止了,那么中间过程 ...
Flink 优化 (七) --------- 常见故障排除_在森林中麋了鹿的博客 …
WebSep 4, 2024 · No changes are made from one run to another: the job starts the first time with a clean state; after some checkpoints get completed, I cancel the job and try to re-run it from the same .jar by specifying the checkpoint path in the "Savepoint path" input, and I … WebOct 15, 2024 · Apache Flink’s checkpoint-based fault tolerance mechanism is one of its defining features. Because of that design, Flink unifies batch and stream processing, can easily scale to both very small and extremely large scenarios and provides support for many operational features like stateful upgrades with state evolution or roll-backs and time-travel. birmingham city council tendering
【Flink 使用注意】Flink checkpoint清除策略使用指南_香 …
WebFeb 1, 2024 · name: basic-checkpoint-ha-example spec: image: flink:1.16 flinkVersion: v1_16 flinkConfiguration: taskmanager.numberOfTaskSlots: "2" state.savepoints.dir: file:///flink-data/savepoints state.checkpoints.dir: file:///flink-data/checkpoints high-availability: org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory WebTip: Always prefer to use savepoints over checkpoints because savepoints are always retained until you explicitly delete them. Use checkpoints when savepoint creation fails. However, because only the 3 latest successful checkpoints are retained, and to prevent them from being deleted while a new checkpoint is created, remember to first cancel … WebJan 6, 2024 · Flink implements a lightweight asynchronous checkpoint based on the barrier mechanism to ensure high availability and efficiency. Choosing an optimal checkpoint interval is critical for checkpoint-based stream processing systems to ensure efficiency of the streaming applications. dandridge boat tours and excursions