Certified Associate Developer for Apache Spark Exam

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Question 158

The code block shown below contains an error. The code block is intended to create a single-column DataFrame from Python list years which is made up of integers. Identify the error.

Code block:

spark.createDataFrame(years, IntegerType)

The column name must be specified.

The years list should be wrapped in another list like [years] to make clear that it is a column rather than a row.

There is no createDataFrame operation in spark.

The IntegerType call must be followed by parentheses.

The IntegerType call should not be present — Spark can tell that list years is full of integers.

Correct Answer: D

The IntegerType call must be followed by parentheses. This is because IntegerType is a class, and in Python, for it to be instantiated correctly, the parentheses are required. Therefore, the correct code block should be spark.createDataFrame(years, IntegerType()).

Discussion

azure_bimonsterOption: D

D is right

saryuOption: D

Answer should be D

5effea7Option: D

The answer is D