Real questions from top companies · hard
Given a streaming dataset from Kafka, how would you ingest the data in real-time using Spark?
How do you optimize Spark jobs for performance?
How would you implement a sliding window aggregation in Spark Structured Streaming?
Implement a Spark job to find the top 10 most frequent words in a large text file.
What are the key components of the Spark execution model (Job, Stage, Task)?
What is Spark's Catalyst Optimizer? Explain its stages.
What is the difference between Spark RDDs, DataFrames, and Datasets?
What is the small-file problem in Spark, and how do you solve it?
Why is SparkSession used in Spark 2.0 and later versions?
What is the difference between a generator and a list in Python?
Briefly introduce yourself and walk us through your journey as a Data Engineer so far.
Describe a time you had to learn a new technology quickly to solve a problem.
Describe a time you had to make a difficult decision with limited information.
How do you stay updated with the latest trends and technologies in data engineering?
Describe a time when you had to deal with a difficult coworker.
Describe a time when you had to work with a team to solve a complex problem.
Describe a time you had to make a difficult decision with limited information.
Discuss a time you had to push back on a requirement.
How do you stay updated with the latest trends and technologies in data engineering?
Discuss the data size challenges in your previous projects. How did you optimize storage and processing?
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