Free DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Web TestEngine Demo

Q20 Single choice

The code block displayed below contains an error. When the code block below has executed, it should have divided DataFrame transactionsDf into 14 parts, based on columns storeId and

transactionDate (in this order). Find the error.

Code block:

transactionsDf.coalesce(14, "storeId", "transactionDate")

A
The parentheses around the column names need to be removed and .select() needs to be appended to the code block.
B
Operator coalesce needs to be replaced by repartition, the parentheses around the column names need to be removed, and .count() needs to be appended to the code block.
C
Operator coalesce needs to be replaced by repartition, the parentheses around the column names need to be removed, and .select() needs to be appended to the code block.
D
Operator coalesce needs to be replaced by repartition and the parentheses around the column names need to be replaced by square brackets.
E
Operator coalesce needs to be replaced by repartition.

DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Web TestEngine demo