Webb在 Java 中,使用 RichFunction 并且在 open() 方法中初始化有问题的字段。 在 Scala 中,你通常可以简单地使用 “lazy val” 声明来推迟初始化,直到分布式执行发生。这可能是 … Webb4 maj 2024 · For Sale: 2 beds, 2 baths ∙ 1917 sq. ft. ∙ 253 Pinellas Way, St Johns, FL 32259 ∙ $552,353 ∙ MLS# 1167061 ∙ The Pier, like its namesake, delivers desirable form and …
RichFilterFunction (flink 1.1-SNAPSHOT API) - ci.apache.org
Webb@Public public interface RichFunction extends Function An base interface for all rich user-defined functions. This class defines methods for the life cycle of the functions, as well as methods to access the context in which the functions are executed. WebbAs a RichFunction, it gives access to the RuntimeContext and provides setup and tear-down methods: RichFunction.open(org.apache.flink.configuration.Configuration) and … build polaris ranger 570
RichIterativeCondition (Flink : 1.12-SNAPSHOT API)
Webb6 aug. 2024 · Flink 如何使用ProcessFunction. 1. ProcessFunction. ProcessFunction 可以被认为是一种提供了对 KeyedState 和定时器访问的 FlatMapFunction。. 每在输入流中接收到一个事件,就会调用来此函数来处理。. 对于容错的状态,ProcessFunction 可以通过 RuntimeContext 访问 KeyedState,类似于其他 ... WebbBest Java code snippets using org.apache.flink.api.common.functions. RichMapFunction.open (Showing top 20 results out of 315) … Webb21 jan. 2024 · 1.1 description on API. A function that processes elements of a stream. For every element in the input stream processElement (Object, ProcessFunction.Context, Collector) is invoked. This can produce zero or more elements as output. Implementations can also query the time and set timers through the provided ProcessFunction.Context. build poker table top