action count() in Spark RDD

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- September 20, 2018 at 1:57 pm #5029
  
  DataFlair Team
  Spectator
  
  Explain the action count() in Spark RDD.
- September 20, 2018 at 1:58 pm #5032
  DataFlair Team
  Spectator
  <div class=”post”>
  - count() is an action in Apache Spark RDD operation
  - count() returns the number of elements in RDD.
  Example:
  val rdd1 = sc.parallelize(List(10,20,30,40))
  println(rdd1.count())
  
  Output:
  4
  
  It returns a number of elements or items in RDD. So it basically counts the number of items present in the dataset and returns a number after the count.
  
  </div>
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