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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第一阶段

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大数据实战项目：反爬虫系统（Lua+Spark+Redis+Hadoop框架搭建）第二阶段

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【问题】spark运行python写的mapreduce任务，hadoop平台报错，java.net.ConnectException: 连接超时

问题：用spark-submit以yarn-client方式提交任务，在集群的某些节点上的任务出现连接超时的错误，排查过各种情况后，确定在防火墙配置上出现问题。原因：我猜测是python程序启动后，作为Server，hadoop中资源调度是以java程序作为Client端访问， Python启...

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