Câu 6: AWS Certified Data Engineer - Associate DEA-C01
A data engineer needs Amazon Athena queries to finish faster. The data engineer notices that all the files the Athena queries use are currently stored in uncompressed .csv format. The data engineer also notices that users perform most queries by selecting a specific column. Which solution will MOST speed up the Athena…
Nội dung câu hỏi
A data engineer needs Amazon Athena queries to finish faster. The data engineer notices that all the files the Athena queries use are currently stored in uncompressed .csv format. The data engineer also notices that users perform most queries by selecting a specific column. Which solution will MOST speed up the Athena query performance?
Các lựa chọn
Đáp án được giữ gọn theo nhãn A, B, C, D trong phần bình chọn tương tác.
- A. Change the data format from .csv to JSON format. Apply Snappy compression.
- B. Compress the .csv files by using Snappy compression.
- C. Change the data format from .csv to Apache Parquet. Apply Snappy compression. — đáp án hiện tại
- D. Compress the .csv files by using gzip compression.
Cộng đồng
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