A Spark job writes one tiny file per task, producing tens of thousands of small files per day
A medium Pipeline Design mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Pipeline Design
- Difficulty
- medium
Interview Prompt
A Spark job writes one tiny file per task, producing tens of thousands of small files per day. Downstream reads are dominated by file-open overhead. Design output that writes right-sized files.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your pipeline design solution with real code execution
- Get instant feedback and a hire/no-hire decision