Convert JSON to Parquet using Scala

In this article we will see how to convert a JSON file to a Parquet file using a Spark Dataframe using Scala.

The input JSON file is shown below.



The SBT library dependencies are shown below for reference.

scalaVersion := "2.11.12"

libraryDependencies += "org.apache.spark" %% "spark-core" % "2.3.0"

libraryDependencies += "org.apache.spark" %% "spark-sql" % "2.3.0"

The Scala program is provided below.

import org.apache.spark.sql.{SaveMode, SparkSession}

object JSONToParquetConverter extends App {
  val spark = SparkSession.builder()
    .master("local")
    .appName("JSONToParquetConverter")
    .getOrCreate()

  val inputFile = "C:\\data\\data.json"  val outputFile = "C:\\data\\out_data_json2parquet"
  val df = spark    .read
    .format("json")
    .option("multiline", "true")
    .load(inputFile)

  df    .write
    .mode(SaveMode.Overwrite)
    .option("header","true")
    .parquet(outputFile)
}

The converted Parquet file is shown below.



That's all!