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Glue ETL optimization: Performance improvement strategies?

Cloud/Toolshard0.2 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Daniel Wellington
Key Concepts Tested
etloptimizationpartitionspark
Expert AnswerPremium
45 wordsInterview-ready
Strategies: (1) Right-size DPUs; auto-scaling. (2) Partition read/write; predicates. (3) Parallelism—parallelCopies, repartition. (4) Parquet/ORC; compact small files. (5) Pushdown at source. (6) Job bookmarks for incremental. (7) Salting for skew. Trade-off: Over-parallelism can throttle source....
The complete answer continues with detailed implementation patterns, architectural trade-offs, and production-grade considerations. It covers performance optimization strategies, common pitfalls to avoid, and real-world examples from companies like Daniel Wellington. The answer also includes follow-up discussion points that interviewers commonly explore.

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