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Pill 7 · Spark UI

Quiz: Can You Read the Spark UI?

These questions test whether you can look at Spark UI metrics and identify the real bottleneck. Not memorization of metric names, but the reasoning to diagnose production problems.

Quiz

Pill 7: Reading the Spark UI

Question 1 of 7

How did it go?

If you scored below 70%, re-read Pill 7 and pay special attention to the P75 vs Max trick and the three practical examples. Try to explain each scenario out loud: what the metrics show, why it happens, and what the fix is.

Re-read Pill 7 Next: Pill 8 Quiz — Iceberg Pitfalls