Spark sortByKey Function

In Spark, the sortByKey function maintains the order of elements. It receives key-value pairs (K, V) as an input, sorts the elements in ascending or descending order and generates a dataset in an order.

Example of sortByKey Function

In this example, we arrange the elements of dataset in ascending and descending order.

• To open the Spark in Scala mode, follow the below command.

• Create an RDD using the parallelized collection.

Now, we can read the generated result by using the following command.

For ascending,

• Apply sortByKey() function to ignore duplicate elements.

• Now, we can read the generated result by using the following command.

Here, we got the desired output.

For descending,

• Apply sortByKey() function and pass Boolean type as parameter.

• Now, we can read the generated result by using the following command.

Here, we got the desired output.