
Answer-first summary for fast verification
Answer: No
## Analysis of the Proposed Solution The proposed solution to convert files to compressed delimited text files does **NOT** meet the goal of ensuring fast data copy to Azure Synapse Analytics. ### Key Issue: Row Size Limitation - **75% of the rows contain description data averaging 1.1 MB in length** - Azure Synapse Analytics has a **1 MB row size limitation** when using PolyBase or similar loading mechanisms - The average row size of 1.1 MB exceeds this fundamental constraint ### Why Compressed Delimited Text Files Are Problematic 1. **Row Width Violation**: Even with compression, the fundamental row structure remains the same. Compression reduces file size but doesn't change the fact that individual rows exceed the 1 MB limit. 2. **Loading Failures**: When rows exceed 1 MB, the data loading process will fail or encounter significant performance degradation as the system struggles to handle oversized rows. 3. **Inefficient Processing**: Large rows in delimited text format are processed inefficiently by Azure Synapse Analytics loading mechanisms. ### Better Alternatives for Fast Data Copy To ensure fast data copy with rows exceeding 1 MB: - **Use Parquet Format**: Parquet files with columnar storage and built-in compression are optimized for analytical workloads and can handle larger row sizes more efficiently. - **Split Large Columns**: Consider vertically partitioning the data or splitting large description columns into multiple smaller columns. - **Use COPY Command**: The COPY command in Azure Synapse Analytics has more flexible row size handling compared to PolyBase. - **Data Transformation**: Pre-process the data to ensure no single row exceeds the 1 MB limit before attempting to load into the data warehouse. ### Conclusion While compression can improve transfer speeds by reducing file size, the fundamental issue of oversized rows (1.1 MB average vs. 1 MB limit) makes compressed delimited text files an unsuitable solution. The data loading process would likely fail or perform poorly due to the row size constraint violation.
Author: LeetQuiz Editorial Team
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You have an Azure Storage account containing 100 GB of files with rows of text and numerical data. Seventy-five percent of the rows contain description data averaging 1.1 MB in length.
You plan to copy this data from storage to an enterprise data warehouse in Azure Synapse Analytics and need to prepare the files to ensure a fast data copy.
Proposed Solution: Convert the files to compressed delimited text files.
Does this solution meet the goal?
A
Yes
B
No
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