Exam Certified Associate Developer for Apache Spark topic 1 question 9 discussion

The DataFrame operation classified as an action is: C. DataFrame.take() Explanation: In Spark, actions are operations that trigger the execution of transformations on a DataFrame and return results or side effects. Actions are evaluated eagerly, meaning they initiate the execution of the computation plan built by transformations. Among the options provided, DataFrame.take() is an action because it returns an array with the first n elements from the DataFrame as an array. It triggers the execution of any pending transformations and collects the resulting data.

It returns first n rows of an array

DataFrame.take(num: int) → List[pyspark.sql.types.Row] All the other functions return a dataframe again, which is defined as a transformation. An action returns a result of a computation, which take() does.