Flink学习17---容错机制(七)深入理解KeyedState,使用keyedState实现累加功能
直接上代码如下:importorg.apache.flink.api.common.functions.MapFunction;importorg.apache.flink.api.common.restartstrategy.RestartStrategies;importorg.apache.flink.api.java.tuple.Tuple;importorg.apache.flink.a