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ValueLabs
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I applied via Referral and was interviewed in Sep 2023. There were 3 interview rounds.
I applied via Referral and was interviewed in Jun 2024. There was 1 interview round.
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Logical Queries based on Java Program.
I was interviewed in May 2024.
Explain last CI project
Spark uses various optimization techniques like predicate pushdown, column pruning, and shuffle optimization.
Predicate pushdown: Filters are pushed down to the data source to reduce the amount of data to be processed.
Column pruning: Only necessary columns are selected to minimize data transfer and processing.
Shuffle optimization: Minimizing data shuffling during joins and aggregations to improve performance.
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