WebSep 2, 2015 · Flink’s Kafka consumer handles backpressure naturally: As soon as later operators are unable to keep up with the incoming Kafka messages, Flink will slow down the consumption of messages from Kafka, leading to fewer requests from the broker. Since brokers persist all messages to disk, they are able to also serve messages from the past. WebOct 23, 2024 · 关键词: Flink 反压. 什么是 Back Pressure. 如果看到任务的背压警告(如 High 级别),这意味着 生成数据的速度比下游算子消费的的速度快。. 以一个简单的 Source -> Sink 作业为例。. 如果能看到 Source 有警告,这意味着 Sink 消耗数据的速度比 Source 生成速度慢。. Sink ...
Metrics Apache Flink
WebFeb 25, 2024 · apache-flink flink-streaming Share Follow asked Feb 25, 2024 at 11:57 Raúl García 311 2 17 Add a comment 1 Answer Sorted by: 2 I suspect you might do better to implement a custom sink based on FLIP-171: Async Sink. This will be included in Flink 1.15, see [FLINK-24041] Generic AsyncSinkBase. Share Follow answered Feb 25, 2024 at 15:23 WebSep 26, 2024 · Since Flink 1.13, an operator can be in one of three states: idle, meaning there is no data to process; backpressured, meaning it is blocked, waiting for an output … how much is one dine
How does Flink analyze and handle back pressure?
WebAug 30, 2024 · Backpressure is generated going in the opposite direction, created by the plastic itself as it pushes the screw back. The pressure of the plastic in front of the screw builds as the screw rotates and forces more plastic forward. Once that plastic generates enough pressure to exceed the pressure required to force hydraulic fluid through the ... WebWhen this happens and becomes an issue, there are three ways to address the problem: Remove the backpressure source by optimizing the Flink job, by adjusting Flink or JVM configurations, or by scaling up. Reduce the amount of buffered in-flight data in the Flink job. Enable unaligned checkpoints. WebFlink exposes a metric system that allows gathering and exposing metrics to external systems. Registering metrics You can access the metric system from any user function that extends RichFunction by calling getRuntimeContext ().getMetricGroup () . This method returns a MetricGroup object on which you can create and register new metrics. how do i connect a keyboard