A warm-up that quietly reveals whether you understand why analytical engines are fast at all. Compression, projection, predicate pushdown, and the one workload where columnar is the wrong choice.
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easyDatabricksSnowflakePalantir
Why is Parquet the default for analytics? What does columnar storage actually buy you over CSV?
A warm-up that quietly reveals whether you understand why analytical engines are fast at all. Compression, projection, predicate pushdown, and the one workload where columnar is the wrong choice.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
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