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AWS Certified Data Engineer Associate DEA-C01 Practice Question

An AWS Glue ETL job launches several AWS Lambda functions that create and transform hundreds of 100-MB intermediary Parquet files. The files must be shared across concurrent function invocations and retained for downstream steps executed minutes later. Which approach will meet these requirements with the LEAST operational overhead while remaining within Lambda service quotas?

  • Configure the Lambda function's ephemeral /tmp storage to 10 GB and write the intermediary files there so each invocation can read files created by other invocations.

  • Use AWS DataSync inside the function to mount an Amazon S3 bucket as a local POSIX file system for reading and writing the intermediary files.

  • Attach an Amazon EBS volume to the Lambda function by initiating an AWS Systems Manager session and store the files on that volume.

  • Create an Amazon EFS file system, configure an access point, and attach it to the Lambda function by specifying the file system ARN and mount path.

AWS Certified Data Engineer Associate DEA-C01
Data Ingestion and Transformation
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