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;