我的代码是这样的
scala> val r1 = sc.textFile("D:/item.csv").map(x => x.split(",")).map(x => List(
x(0),x(1),x(2),x(3),x(4),x(5)).toArray).mapPartitions{x => val stringWriter = ne
w StringWriter(); val csvWriter = new CSVWriter(stringWriter); csvWriter.writeAl
l(x.toList); Iterator(stringWriter.toString)}.saveAsTextFile("D:/result/r1")
scala> val r1 = sc.textFile("D:/item.csv").map(x => x.split(",")).map(x => List(
x(0),x(1),x(2),x(3),x(4),x(5)).toArray).mapPartitions{x => val stringWriter = ne
w StringWriter(); val csvWriter = new CSVWriter(stringWriter); csvWriter.writeAl
l(x.toList); Iterator(stringWriter.toString)}.saveAsTextFile("D:/result/r1")
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1,这是Windows上的
2,请问可以直接保存成一个CSV文件吗?
StructField("req_id", StringType, true),
StructField("creative_id", StringType, true),
StructField("group_id", StringType, true),
StructField("user_ip", StringType, true)))
val df = spark.read.schema(sspbidSchema).csv("ddd").select("req_id").write.csv("ddd")我用的是2.0