铭文一级: 第八章:Spark Streaming进阶与案例实战 updateStateByKey算子需求:统计到目前为止累积出现的单词的个数(需要保持住以前的状态) java.lang.IllegalArgumentException: requirement failed: The checkpoint directory has not been set. Please set it by StreamingContext.checkpoint(). 需求:将统计结果写入到MySQLcre…
1.Spark Streaming功能介绍1)定义Spark Streaming is an extension of the core Spark API that enables scalable, high-throughput, fault-tolerant stream processing of live data streams 2.NC服务安装并运行Spark Streaming1)在线安装nc命令yum install -y nc2)运行Spark Streaming 的Wor…
1.Spark Streaming功能介绍 1)定义 Spark Streaming is an extension of the core Spark API that enables scalable, high-throughput, fault-tolerant stream processing of live data streams 2.NC服务安装并运行Spark Streaming 1)在线安装nc命令 yum install -y nc 2)运行Spark Streaming…