InvalidProgramException: Specifying keys via field positions is only valid for tuple data types. Type: GenericType<scala.Tuple2>

运行Flink javaWordCount实例报错:

原因Java程序引入了scala的Tuple2

posted @ 2020-05-23 22:24  这个小仙女真可爱  阅读(1003)  评论(0编辑  收藏  举报