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Interview Questions

Real questions from top companies in Spark/Big Data · medium

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All CategoriesBehavioralSpark/Big DataSQLPython/CodingSystem Design/ArchitectureCloud/ToolsGeneral/Othereasymediumhard
1

Transformation vs. Action in PySpark?

Spark/Big Datamedium
2

What Hadoop command would you use to merge multiple files into one?

Spark/Big Datamedium
3

What are Spark Submit properties?

Spark/Big Datamedium
4

What are the key differences between Map and Reduce in Spark?

Spark/Big Datamedium
5

What are the key performance tuning techniques you apply in Spark jobs to improve performance?

Spark/Big Datamedium
6

What are the limitations of the REORG command with respect to large datasets?

Spark/Big Datamedium
7

What are the performance trade-offs of using salting to mitigate data skewness?

Spark/Big Datamedium
8

What are the steps to efficiently process 1 TB of data in Spark?

Spark/Big Datamedium

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