What is the primary difference between a 'transformation' and an 'action' in Spark?

Q: What is the correct answer for CCA-F?

The correct answer is B. Transformations create a new RDD/DataFrame/Dataset from an existing one and are lazily evaluated. Actions trigger the execution of the DAG of transformations and either return a result to the driver or write data to storage.

Q: What is the primary difference between a 'transformation' and an 'action' in Spark?

The correct answer is B. Transformations create a new RDD/DataFrame/Dataset from an existing one and are lazily evaluated. Actions trigger the execution of the DAG of transformations and either return a result to the driver or write data to storage.

Q: What are the options for this CCA-F question?

A. Transformations are executed immediately, actions are lazy. · B. Transformations return a new RDD/DataFrame, actions return a result or write data. · C. Transformations are always narrow, actions are always wide. · D. Transformations are for structured data, actions are for unstructured data.

Question

What is the primary difference between a 'transformation' and an 'action' in Spark?

FirstInTest · Accepted Answer

Transformations create a new RDD/DataFrame/Dataset from an existing one and are lazily evaluated. Actions trigger the execution of the DAG of transformations and either return a result to the driver or write data to storage.

Answer

Transformations are executed immediately, actions are lazy.

Answer

Transformations return a new RDD/DataFrame, actions return a result or write data.

Answer

Transformations are always narrow, actions are always wide.

Answer

Transformations are for structured data, actions are for unstructured data.

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