https://community.databricks.com/t5/data-engineering/what-is-difference-between-action-and-transformation-in-spark/m-p/26612#M18638 Wed, 02 Jun 2021 23:28:54 GMT Anonymous 2021-06-02T23:28:54Z https://community.databricks.com/t5/data-engineering/what-is-difference-between-action-and-transformation-in-spark/m-p/26612#M18638 Wed, 02 Jun 2021 23:28:54 GMT https://community.databricks.com/t5/data-engineering/what-is-difference-between-action-and-transformation-in-spark/m-p/26612#M18638 Anonymous 2021-06-02T23:28:54Z https://community.databricks.com/t5/data-engineering/what-is-difference-between-action-and-transformation-in-spark/m-p/26613#M18639 An Action in Spark is any operation that does not return an RDD. Evaluation is executed when an action is taken. Actions trigger the scheduler, which build a directed acyclic graph (DAG) as a plan of execution. The plan of execution is created by working backward to define the series of steps required to produce the final distributed dataset (each Partition). A transformation are functions that return another RDD. Fri, 04 Jun 2021 11:32:00 GMT https://community.databricks.com/t5/data-engineering/what-is-difference-between-action-and-transformation-in-spark/m-p/26613#M18639 Ryan_Chynoweth 2021-06-04T11:32:00Z