Is 'load' command in spark an action or transformation?

Question

df = spark.read.format('csv').load('...')

It is my understanding that , load is a transformation and executes only when an action is called. However, while the load statement is being executed, it appears to be an action under the Spark UI.

Edit:

From the comments/answers , i inferred that load may or may not be a transformation but not definitely an action which is great and understandable.

If it is not an action why it is creating a DAG? It creates a DAG just for a load statement not just WholeStageCodegen(which is in SQL tab). Please see the below image: Screenshot

Answer 1

Specifically, based on your comments:

Load does nothing. It is just part of the sqlContext.read or spark.read.format API as a parameter, that can be set indirectly or directly on the read. read allows data formats to be specified.

The DF or underlying RDD is evaluated lazily as they say.