A monitoring service generates 1 TB of scale metrics record data every minute. A Research team performs queries on this data using Amazon Athena. The queries run slowly due to the large volume of data, and the team requires better performance. How should the records be stored in Amazon S3 to improve query performance?
A) CSV files
B) Parquet files
C) Compressed JSON
D) RecordIO

Question

Quizplus · Accepted Answer

Parquet files are columnar storage files that are optimized for query performance and can significantly reduce the amount of data scanned by Athena, improving query speed.

A Monitoring Service Generates 1 TB of Scale Metrics Record