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Interview questions
Tell me about yourself and your experience.
Explain the concept of checkpointing in Spark and why it is important.
How do you drop columns with null values in PySpark?
Explain Dynamic Partition Pruning error and how to fix it.
How do you convert 3 rows into one column in SQL?
How do you count occurrences in a column in SQL?
How do you keep a specific column on top in SQL?
Explain read and write modes in Spark.
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