spark-shell讀取parquet文件

1、進入spark-shell窗口

 

2、

val sqlContext = new org.apache.spark.sql.SQLContext(sc)

 

3、

val parquetFile = sqlContext.parquetFile("hdfs://cdp/user/az-user/sparkStreamingKafka2HdfsData/part-00000-ff60a7d3-bf91-4717-bd0b-6731a66b9904-c000.snappy.parquet")

hdfs://cdp是defaultFS，也可以不寫，如下:

val parquetFile2 = sqlContext.parquetFile("/user/az-user/sparkStreamingKafka2HdfsData/part-00000-ff60a7d3-bf91-4717-bd0b-6731a66b9904-c000.snappy.parquet")

 

4、

parquetFile.take(30).foreach(println)

 

 

 

 

參考:https://www.jianshu.com/p/57b20d9d7b4a?utm_campaign=maleskine&utm_content=note&utm_medium=seo_notes&utm_source=recommendation