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4
Delta Table Compaction
CodinghardCommon
data-lakecompactionconcurrencyacid
Reported
7 times
Last seen
2026-03-15
First seen
2025-08-01
Active in
2025, 2026
Description
Design an algorithm to compact small files in a Delta Lake table while maintaining ACID properties and handling concurrent readers/writers.
Approach Tips
Focus on the file selection strategy and how you handle concurrent writes during compaction. Discuss optimistic concurrency control.
Related LeetCode Problem
LC #56 - Merge Intervals
Sources
Blind·SDE-3·2026-03-15
Glassdoor·Senior·2025-10-22
DB
Databricks
Data/AI
Typically appears in: Phone Screen
60 min — 1 coding problem, usually LC medium-hard. Focus on data structures and algorithms.