SCALA

repartition in spark scala

rdd1.saveAsTextFile("/tmp/partition")
//Writes 6 part files, one for each partition
Partition 1 : 0 1 2
Partition 2 : 3 4 5
Partition 3 : 6 7 8 9
Partition 4 : 10 11 12
Partition 5 : 13 14 15
Partition 6 : 16 17 18 19

repartition in spark scala

  val spark:SparkSession = SparkSession.builder()
    .master("local[5]")
    .appName("SparkByExamples.com")
    .getOrCreate()

 val df = spark.range(0,20)
 println(df.rdd.partitions.length)

 df.write.mode(SaveMode.Overwrite)csv("partition.csv")