rdd转换为Set或者Map_rdd set-CSDN博客

网站介绍:文章浏览阅读6.1k次。rdd转Setval toSet: Set[String] = file.map(u => { strings ++= Set(u) strings}).collect().flatten.toSetrdd转Mapval appdict = sc.textFile(appfilePath).map { line => { val fields = l_rdd set