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Compare Transformation and Action in Apache Spark?

Question Posted / umeas chandra


Compare Transformation and Action in Apache Spark?..

Answer / Pratibha Dwivedi

Transformations are lazy operations that create a new dataset, but do not trigger any computation until an action is called. Actions, on the other hand, trigger the execution of all transformations up to that point, producing a result that can be persisted or written to an external storage system. Examples of actions include count(), collect(), and saveAsTextFile().

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