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Questions tagged partition
Tell me about yourself and your experience.
What is the difference between repartition and coalesce in Apache Spark?
Write an SQL query to find the second-highest salary from an employee table.
What is the difference between cache() and persist() in Spark? When would you use each?
What is the difference between groupByKey and reduceByKey in Spark?
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?
Demonstrate the difference between DENSE_RANK() and RANK()
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