摘要:
实时ETL 准备: 每台节点启动zookeeper集群 cd /usr/local/zookeeper/bin/ ./zkServer.sh start master上启动kafka: cd /usr/local/kafka_2.12-2.7.0/bin kafka-server-start.sh 阅读全文
摘要:
Output Modes输出模式 package cn.itcast.structured import org.apache.spark.SparkContext import org.apache.spark.sql.{DataFrame, Dataset, Row, SparkSession} 阅读全文