Load CSV data in to Dataframe and convert to Array using Apache Spark (Java)

Question

I have a CSV file with below data :

1,2,5  
2,4  
2,3 

I want to load them into a Dataframe having schema of string of array

The outpu

Answer 1

Below is the sample code in Java. You need to read your file using spark.read().text(String path) method and then call the split function.

import static org.apache.spark.sql.functions.split;

public class SparkSample {
    public static void main(String[] args) {
        SparkSession spark = SparkSession
                .builder()
                .appName("SparkSample")
                .master("local[*]")
                .getOrCreate();
        //Read file
        Dataset ds = spark.read().text("c://tmp//sample.csv").toDF("value");
        ds.show(false);     
        Dataset ds1 = ds.select(split(ds.col("value"), ",")).toDF("new_value");
        ds1.show(false);
        ds1.printSchema();
    }
}