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Interview questions · medium
What is the difference between repartition and coalesce in Apache Spark?
What is the difference between narrow and wide transformations in Apache Spark? Explain with examples.
Explain the difference between Spark's map() and flatMap() transformations.
Explain the concept of Broadcast Join in Spark. When should it be used?
Why do you want to join this company?
What is the difference between SQL and NoSQL databases?
When and how do you use Broadcast Join in Spark?
Describe your approach to managing data deduplication.
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