import org.apache.spark.SparkConf
import org.apache.spark.SparkContext
import org.apache.spark.sql.SQLContext

object startScala {

def main(args: Array[String]): Unit ={
  val conf = new SparkConf()
    .setAppName("QJZK")
    .setMaster("local")
  val sc = new SparkContext(conf)
  val sQLContext = new SQLContext(sc)

  //读取一个Parquet文件
  val paquetDF = sQLContext.read.format("parquet").load("D:\\work\\input\\*")
  val dd = paquetDF.rdd //转换成RDD格式

  //读取Parquet文件Schema结构
  val parquetschema = sQLContext.parquetFile("D:\\work\\input\\*.parquet")

  println(paquetDF.count())
  paquetDF.show()
}
}