我正在尝试使用笔记本电脑上的Apache zeppelin docker image用Zeppelin编写Spark代码。除了从本地磁盘读取文件外，其他一切都按预期工作当我尝试将csv文件读取到Spark数据帧中
import java.util.Scanner;
public class CarMaintenance
{
public static void main(String[] args)
{
Scanner keyboard = new Scanner(System.in);
String car;
//capture car
System.out.println("What is the make of your car");
car = keyboard.nextLine();
String answer;
boolean yn;
System.out.println("Is your car an import?");
while (true)
{
answer = keyboard.nextLine();
if (answer.equalsIgnoreCase("yes"))
{
yn = true;
break;
}
else if (answer.equalsIgnoreCase("no"))
{
yn = false;
break;
}
else
{
System.out.println("Sorry, I didn't catch that. Please answer yes or no");
}
}
String[] services = {"Oil Change", "Coolant Flush", "Brake Job", "Tune Up"};
for(int i=0; i<services.length; i++)
{
System.out.println("Do you want a " +services[i]);
answer = keyboard.next();
}
double amount = 0;
double[] price = {39.99, 59.99, 119.99, 109.99};
for(int i =0; i<price.length; i++)
{
amount = (price[i] + price [i]);
}
// double total = 0;
double c = 0;
c = car(amount);
// c = car(total);
System.out.println("The price for your services for your" + " " + car + " " + "is" + " "+ c + ".");
}
public static double car(double amount)
{
return (double) ((amount-32)* 5/9);
}
}
我收到以下错误：
val df = spark.read.csv("/User/myname/documents/data/xyz.csv")答案 0 :(得分：0)
我想我找到了答案： 我拉了docker映像（我使用了下面的映像，但是您可以更改它）
docker pull skymindops/zeppelin-dl4j
然后运行：
docker run -it --rm -p 7077:7077 -p 8080:8080 --privileged=true -v $PWD/logs:/logs -v $PWD/notebook:/notebook -v $PWD/data:/data \
-e ZEPPELIN_NOTEBOOK_DIR='/notebook' \
-e ZEPPELIN_LOG_DIR='/logs' \
skymindops/zeppelin-dl4j:latest
现在可以从数据文件夹读取文件了：
val df = spark.read.option("header", "true").csv("/data/xyz.csv")
请注意，我不需要该图像中的笔记本。