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Pill 4 · Join Strategies & Bucketing

Quiz: Do You Know Which Join Strategy Spark Should Use?

These questions test whether you can reason about join strategy selection, OOM risks, and when optimizations like bucketing actually pay off.

Quiz

Pill 4: Broadcast, Sort-Merge, and Bucketing

Question 1 of 7

How did it go?

If you scored below 70%, re-read Pill 4 — but this time, draw the data flow for each join strategy on paper. Trace where data moves and where it stays local. That is the key to understanding the cost differences.

Re-read Pill 4 Next: Pill 5 Quiz — Data Skew