SparkSQL External Datasource简易使用之CSV

下载源码&编译：

git clone https://github.com/databricks/spark-csv.git

sbt/sbt assembly

 

Maven GAV：

groupId: com.databricks.spark

artifactId: spark-csv_2.10

version: 0.2.0

 

$SPARK_HOME/conf/spark-env.sh

export SPARK_CLASSPATH=/home/spark/software/source/spark_package/spark-csv/target/scala-2.10/spark-csv-assembly-0.2.0.jar:$SPARK_CLASSPATH

 

测试数据下载：

wget https://github.com/databricks/spark-csv/raw/master/src/test/resources/cars.csv 

 

Scala API：

import org.apache.spark.sql.SQLContext

val sqlContext = new SQLContext(sc)

import com.databricks.spark.csv._

val cars = sqlContext.csvFile("file:///home/spark/software/data/cars.csv")

cars.collect

 

SQL：

CREATE TABLE cars

USING com.databricks.spark.csv

OPTIONS (path "file:///home/spark/software/data/cars.csv", header "true");



select * from cars;

或者

CREATE TABLE cars (yearMade double, carMake string, carModel string, comments string, blank string)

USING com.databricks.spark.csv

OPTIONS (path "cars.csv", header "true")

select * from cars;