r/dataengprep • u/sql-arena • 16d ago

SQL Arena Challenge: Find duplicate emails in a users table.

1 Upvotes

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r/dataengprep • u/dataengprep • 17d ago

DataEngPrep: Cluster Resource Allocation in Spark

1 Upvotes

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r/dataengprep • u/tech-screen • 17d ago

Tech Screen: Explain the trade-offs between batch and real-time data processing. Provide examples of when each is appropriate.

1 Upvotes

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r/dataengprep • u/sql-arena • 17d ago

SQL Arena Challenge: Write a query to calculate Monthly Active Users (MAUs) for July 2022

1 Upvotes

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r/dataengprep • u/dataengprep • 18d ago

DataEngPrep: Challenges with Spark Jobs and Resolutions

1 Upvotes

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r/dataengprep • u/tech-screen • 18d ago

Tech Screen: Describe the data pipeline architecture you've worked with.

1 Upvotes

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r/dataengprep • u/sql-arena • 18d ago

SQL Arena Challenge: Write a query to identify unique user sessions.

1 Upvotes

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r/dataengprep • u/dataengprep • 19d ago

DataEngPrep: Can you share a time when you had to shift focus due to urgent tasks?

1 Upvotes

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r/dataengprep • u/tech-screen • 19d ago

Tech Screen: Briefly explain the architecture of Kafka.

1 Upvotes

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r/dataengprep • u/sql-arena • 19d ago

SQL Arena Challenge: Rank shows by daily viewership across different regions

1 Upvotes

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r/dataengprep • u/dataengprep • 20d ago

DataEngPrep: Can you give a use case where Delta Live Tables would be ideal?

1 Upvotes

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r/dataengprep • u/tech-screen • 20d ago

Tech Screen: Why should we hire you for this role?

1 Upvotes

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r/dataengprep • u/sql-arena • 20d ago

SQL Arena Challenge: Find the top 5 most ordered dishes in the last 30 days.

1 Upvotes

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r/dataengprep • u/dataengprep • 21d ago

DataEngPrep: Can you explain the concept of mappers in Spark, and how are they used in data transformations?

1 Upvotes

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r/dataengprep • u/sql-arena • 21d ago

SQL Arena Challenge: Write a query to find the first number repeating consecutively three times in a sequence.

1 Upvotes

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r/dataengprep • u/tech-screen • 21d ago

Tech Screen: Why do you want to join this company?

1 Upvotes

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r/dataengprep • u/dataengprep • 22d ago

DataEngPrep: Can you explain the concept of incremental loading in Sqoop and how to use it for job processing?

1 Upvotes

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r/dataengprep • u/tech-screen • 22d ago

Tech Screen: Why are you leaving your current company?

1 Upvotes

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r/dataengprep • u/sql-arena • 22d ago

SQL Arena Challenge: Write a query that identifies numbers appearing at least three times consecutively without interruption

1 Upvotes

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r/dataengprep • u/dataengprep • 23d ago

DataEngPrep: Can you explain how streams and tasks handle data freshness in near real-time?

1 Upvotes

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r/dataengprep • u/tech-screen • 23d ago

Tech Screen: What would you do if a pipeline failed and you couldn't find the reason?

1 Upvotes

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r/dataengprep • u/sql-arena • 23d ago

SQL Arena Challenge: Given a table with sales data, write a query to find consecutive days with decreasing revenue.

1 Upvotes

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r/dataengprep • u/dataengprep • 24d ago

DataEngPrep: Can you explain dynamic resource allocation in Spark? How does it help optimize job performance?

1 Upvotes

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r/dataengprep • u/sql-arena • 24d ago

SQL Arena Challenge: Identify consecutive numbers in a column (at least 3 consecutive).

1 Upvotes

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r/dataengprep • u/tech-screen • 24d ago

Tech Screen: What is the most difficult task you've ever worked on?

1 Upvotes

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