Crucial Exams

AWS Certified Data Engineer Associate DEA-C01 Practice Question

Your data lake stores hourly IoT records in Amazon S3 using the prefix structure raw/iot/year=YYYY/month=MM/day=DD/hour=HH/. Analysts query the data with Amazon Athena. You must ensure that new hourly partitions become available for querying within five minutes of arrival, while keeping operational overhead and crawl costs low. Which solution meets these requirements?

  • Enable Amazon Athena partition projection and disable the AWS Glue crawler for the table.

  • Configure an Amazon S3 event notification that triggers an AWS Glue crawler set to "Crawl new folders only" on the dataset prefix.

  • Use AWS Database Migration Service (AWS DMS) to replicate new S3 objects into the AWS Glue Data Catalog as partitions.

  • Create an AWS Step Functions workflow that runs the statement MSCK REPAIR TABLE in Athena every five minutes.

AWS Certified Data Engineer Associate DEA-C01
Data Store Management
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