Certified Associate Developer for Apache Spark Exam

Exam Certified Associate Developer for Apache Spark All QuestionsBrowse all questions from this exam

Question 81

The code block shown below contains an error. The code block is intended to print the schema of DataFrame storesDF. Identify the error.

Code block:

storesDF.printSchema.getAs[String]

There is no printSchema member of DataFrame – the getSchema() operation should be used instead.

There is no printSchema member of DataFrame – the schema() operation should be used instead.

The entire line needs to be a string – it should be wrapped by str().

The printSchema member of DataFrame is an operation prints the DataFrame – there is no need to call getAs.

There is no printSchema member of DataFrame – schema and the print() function should be used instead.

Correct Answer: D

The printSchema member of DataFrame is an operation that prints the schema directly, so there is no need to call getAs. The correct way to print the schema of a DataFrame in this context is by using storesDF.printSchema().

Discussion

azure_bimonsterOption: D

storesDF.printSchema() would be enough in this case

cookiemonster42Option: D

question is formulated poorly, but most possibly it's D