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Questions tagged join · hard
Tell me about yourself and your experience.
What architecture are you following in your current project, and why?
Briefly introduce yourself and walk us through your journey as a Data Engineer so far.
Explain Fact and Dimension Tables with examples.
Joins and window functions - INNER, LEFT, RIGHT, FULL OUTER, ROW_NUMBER(), RANK(), DENSE_RANK()
Can you explain the architecture of Apache Spark and its components?
How does Spark's Catalyst Optimizer work? Explain its stages.
How do you optimize Spark jobs for better performance? Mention at least 5 techniques.
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