Caused by: java.net.ConnectException: Connection refused: master/192.168.3.129:7077

1：启动Spark Shell，spark-shell是Spark自带的交互式Shell程序，方便用户进行交互式编程，用户能够在该命令行下用scala编写spark程序。java 启动Spark Shell，出现的错误以下所示：web 1 [root@master spark-1.6.1-bin-hadoop2.6]# bin/spark-shell --master spark://mast

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