踩坑记录之spark：value toDF is not a member of org.apache.spark.rdd.RDD
用 sbt 打包 scala 程序时，遇到如下错误：[error] /home/hadoop/sparkapp/src/main/scala/RecommendApp.scala:25:144: value toDF is not a member of org.apache.spark.rdd.RDD[Movie][error] val moviesDF = moviesRDD.map(x...
