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AWS Certified Data Engineer - Associate · AWS
Select one answer.
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
Correct answer is B! A -> glacier is not queryable from Athena C -> Adding Elasticache means adding "infrastructure" D -> Transforming the data format could work but adding operation overhead
D query result reuse will benefit the same queries that are being re-run, it wont benefit new queries. parquet will benefit all queries.
Why not D? The question specifies the option with the least overhead, and it clearly states that the Glue job runs once a day. Since the data for that day will not change, there’s no need for additional overhead.