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Sep 30, 2019 · Apache Spark. Contribute to apache/spark development by creating an account on GitHub. //Write that CSV into many different CSV files, partitioned by city source.Write() .Mode(SaveMode.Overwrite) .Option("header", true) .PartitionBy("city") .Csv("./output-partitioned-city-csv"); We now take that single csv file we read in and write it back out, but instead of writing to a single file we break the csv’s into multiple csv’s ... Dec 22, 2019 · Convert JSON to CSV; Complete Example; Read JSON into DataFrame. Using spark.read.json("path") or spark.read.format("json").load("path") you can read a JSON file into a Spark DataFrame, these methods take a file path as an argument, These methods also support reading multi-line JSON file and with custom schema. In this code-heavy tutorial, we compare the performance advantages of using a column-based tool to partition data, and compare the times with different possible queries.