someby的博客

问题描述 Error:(350, 43) Unable to find encoder for type stored in a Dataset. Primitive types (Int, String, etc) and Product types (case classes) are supported by importing spark.implicits._ Support ...

本篇博客记录一下自己初次尝试使用Structured Streaming。 首先写 一个程序来监昕网络端口发来的内容,然后进行 WordCount 。 package main.learningbigdata.spark.spark3step import org.apache.spark.SparkConf import org.apache.spark.sql.SparkSessio...