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Exam Certified Associate Developer for Apache Spark All Questions

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Exam Certified Associate Developer for Apache Spark topic 1 question 182 discussion

Actual exam question from Databricks's Certified Associate Developer for Apache Spark
Question #: 182
Topic #: 1
[All Certified Associate Developer for Apache Spark Questions]

The code block shown below contains an error. The code block is intended to return a new DataFrame where column productCategories only has one word per row, resulting in a DataFrame with many more rows than DataFrame storesDF. Identify the error and how to fix it.

A sample of storesDF is displayed below:



storesDF.withColumn("productCategories", split(col("productCategories")))

  • A. The split() operation does not accomplish the requested task in the way that it is used. It should be used provided an alias.
  • B. The split() operation does not accomplish the requested task. The broadcast() operation should be used instead.
  • C. The split() operation does not accomplish the requested task in the way that it is used. It should be used as a column object method instead.
  • D. The split() operation does not accomplish the requested task. The explode() operation should be used instead.
  • E. The split() operation does not accomplish the requested task. The array_distinct() operation should be used instead.
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Suggested Answer: D 🗳️
by Oks_An at Sept. 19, 2024, 1:59 p.m.

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58470e1
1 week, 1 day ago
Selected Answer: D
https://spark.apache.org/docs/latest/api/python/reference/pyspark.sql/api/pyspark.sql.functions.explode.html?highlight=explode#pyspark.sql.functions.explode
upvoted 2 times
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Oks_An
2 months ago
Selected Answer: D
Based on the condition "column productCategories only has one word per row, resulting in a DataFrame with many more rows than DataFrame storesDF" there should be an explode() function
upvoted 3 times
...

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