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Databricks

4 Questions28 Oct 2026Online Assessment
Premium
Off CampusDistributed Query Optimization EngineerLakehouse Storage Systems EngineerSpark Catalyst Optimizer EngineerStorage Compaction Systems Engineer

Overall progress

0 / 4solved

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01
Rewriting a Correlated Aggregate Subquery as a Join
CodingPremium
02
Output File Count for First-Fit-Decreasing Compaction
CodingPremium
03
Partitioned Join Buckets That Stay in Memory
CodingPremium
04
Net Row State From a Versioned Change Log
CodingPremium

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