1,安装redis-dump查看复制打印?[root@localhost tank]# telnet 127.0.0.1 6379 //telnet到redis Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '...【阅读全文】
val rdd = df.toJSON.rdd2.如果要指定格式需要自定义函数如下:def formatItem(p:(StructField,Any)):String={ p match { case (sf,a) => sf.dataType match { case StringType => "\"" + sf.name + "\":\"" + a + "\"" case IntegerType => "\"" +...【阅读全文】