Certified Associate Developer for Apache Spark Exam

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Question 95

Which of the following code blocks writes DataFrame storesDF to file path filePath as parquet and partitions by values in column division?

storesDF.write.partitionBy(col("division")).path(filePath)

storesDF.write.option("parquet").partitionBy("division").path(filePath)

storesDF.write.option("parquet").partitionBy(col("division")).path(filePath)

storesDF.write.partitionBy("division").parquet(filePath)

storesDF.write().partitionBy("division").parquet(filePath)

Correct Answer: D

The correct code to write a DataFrame as a parquet file and partition it by values in a column involves using the partitionBy method followed by specifying the file format with parquet. Therefore, the syntax storesDF.write.partitionBy('division').parquet(filePath) is correct.

Discussion

Sowwy1Option: D

Correct is D. storesDF.write.partitionBy("division").parquet(filePath)