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Questions tagged join
Tell me about yourself and your experience.
What is the difference between narrow and wide transformations in Apache Spark? Explain with examples.
What architecture are you following in your current project, and why?
Explain the differences between Repartition and Coalesce. When would you use each?
What is the difference between partitioning and bucketing in Spark, and when would you use bucketing?
What strategies can you use to handle skewed data in Spark?
Briefly introduce yourself and walk us through your journey as a Data Engineer so far.
Describe a time when you had to optimize a slow SQL query. What steps did you take?
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