DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK · Question #10
DATABRICKS-CERTIFIED-ASSOCIATE-DEVELOPER-FOR-APACHE-SPARK Question #10: Real Exam Question with Answer & Explanation
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Question
The code block shown contains an error. The code block is intended to return a new DataFrame where column sqft from DataFrame storesDF has had its missing values replaced with the value 30,000. Identify the error. A sample of DataFrame storesDF is displayed below: Code block: storesDF.na.fill(30000, col("sqft"))
Options
- AThe argument to the subset parameter of fill() should be a string column name or a list of string
- BThe na.fill() operation does not work and should be replaced by the dropna() operation.
- Che argument to the subset parameter of fill() should be a the numerical position of the column
- DThe na.fill() operation does not work and should be replaced by the nafill() operation.
- EThe na.fill() operation does not work and should be replaced by the fillna() operation.
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