Exam CDP-3002 Topic 1 Question 164 Discussion

Actual exam question for Cloudera's CDP-3002 exam
Question #: 164
Topic #: 1
Discuss the trade-offs between using wide tables (many columns) and narrow tables (few columns) in Spark and the implications for data processing efficiency.

Suggested Answer: D Vote an answer

Wide tables can lead to performance inefficiencies due to larger data serialization costs in shuffle operations. Narrow tables, however, may require more complex logic for joining data from multiple columns. Choosing the optimal format depends on access patterns and trade-offs in storage and processing efficiency.

by Osborn at Aug 30, 2026, 12:02 PM

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