WebJun 16, 2024 · Flink 的 broadcast 流实时消费 MQ 中数据,就可以实时读取到维表的更新,然后配置就会在 Flink 任务生效,通过这种方法及时的修改了维度信息。 broadcast 可以动态实时更新配置,然后影响另一个数据流的处理逻辑。 注:广播变量存在于每个节点的内存中,所以数据集不能太大,因为广播出去的数据,会一直在内存中存在。 理论可能理 … Web以字节流的形式写入进 checkpoint; Managed State(托管状态) 托管状态可以使用 Flink runtime 提供的数据结构来表示,例如内部哈希表或者 RocksDB。具体有 ValueState,ListState 等。Flink runtime 会对这些状态进行编码然后将它们写入到 checkpoint 中。
Flink 源码:Checkpoint 元数据详解 - 简书
WebJun 22, 2024 · Flink distinguishes between keyed and non-keyed state. All of the state managed by Flink, both keyed and non-keyed, is included in savepoints and checkpoints. Broadcast state is a kind of non-keyed state, and like all … WebCheckpoints make state in Flink fault tolerant by allowing state and the corresponding stream positions to be recovered, thereby giving the application the same semantics as a failure-free execution. See Checkpointing for how to enable and configure checkpoints for your program. Checkpoint Storage different types of intelligence gathering
flink streaming - Best approach to reduce checkpoint size for broadcast …
WebCheckpointing # Every function and operator in Flink can be stateful (see working with state for details). Stateful functions store data across the processing of individual … WebNov 10, 2024 · Broadcast partitioning is often used to implement a broadcast state which should be equal across all operators. Flink implements the broadcast state by checkpointing only a single copy of the state from subtask 0 of the stateful operator. Upon restore, we send that copy to all of the operators. Web我对 Flink 组件有着浓厚的兴趣,工作之余经常钻研技术、例如:Flink 四大基石、Flink 内核应用提交流程、Flink 调度策略等。 入职 x 年,曾荣获优秀员工,以上是我的自我介绍,请面试官提问。 2 面试官:介绍一下你最拿手的项目 form jc/oh fillable