Dev

[ypriverol]

PR Type

enhancement

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Description

• Enhanced the select_random_files function to ensure no duplicate files are selected by removing each selected file from the list.
• Modified the benchmark output and CSV report to include the file name, providing more detailed information.
• Updated the report header to reflect the inclusion of the file name in the output.

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Changes walkthrough 📝

	Relevant files
Enhancement	benchmark.sh Improve file selection and reporting in benchmark script  benchmark/benchmark.sh Enhanced the select_random_files function to avoid duplicates. Added file name to the benchmark output and CSV report. Updated report header to include file name. +15/-8

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⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Potential Performance Issue The new implementation of select_random_files function may be less efficient for large arrays due to repeated array slicing operations. Code Duplication There's repeated code for logging success and failure cases in the benchmark_download function. This could be refactored to reduce duplication.

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PR Code Suggestions ✨

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Category	Suggestion	Score
Error handling	Add error handling for insufficient number of files in the selection process Consider adding error handling for the case when there are fewer than 3 files in the category_files array. This will prevent potential issues if the script is run with an insufficient number of files. benchmark/benchmark.sh [36-47] select_random_files() { category_files=("$@") selected_files=() + if [ ${#category_files[@]} -lt 3 ]; then + echo "Error: Not enough files to select from. Need at least 3." >&2 + return 1 + fi for i in {1..3}; do - # Generate random index rand_index=$((RANDOM % ${#category_files[@]})) selected_files+=("${category_files[$rand_index]}") - # Remove the selected file to avoid duplicates category_files=("${category_files[@]:0:$rand_index}" "${category_files[@]:$((rand_index + 1))}") done echo "${selected_files[@]}" } Apply this suggestion Suggestion importance[1-10]: 8 Why: Adding error handling for cases with fewer than 3 files is a significant improvement, as it prevents potential runtime errors and ensures the function behaves predictably with insufficient input.	8
Enhancement	Improve the function to return an array of selected files instead of echoing them Consider using an array to store the selected files instead of echoing them. This would make it easier to manipulate and use the selected files in other parts of the script. You can modify the function to return the array by printing it in a specific format, and then use mapfile to read it in the calling code. benchmark/benchmark.sh [36-47] select_random_files() { - category_files=("$@") - selected_files=() + local category_files=("$@") + local selected_files=() for i in {1..3}; do # Generate random index - rand_index=$((RANDOM % ${#category_files[@]})) + local rand_index=$((RANDOM % ${#category_files[@]})) selected_files+=("${category_files[$rand_index]}") # Remove the selected file to avoid duplicates category_files=("${category_files[@]:0:$rand_index}" "${category_files[@]:$((rand_index + 1))}") done - echo "${selected_files[@]}" + printf '%s\n' "${selected_files[@]}" } +# Usage: +# mapfile -t selected_files < <(select_random_files "${category_files[@]}") + Apply this suggestion Suggestion importance[1-10]: 5 Why: The suggestion to use printf instead of echo and demonstrate how to use mapfile can improve the handling of selected files, making it easier to manipulate them later in the script. However, the improvement is minor since the current implementation with echo is functional.	5
Performance	Optimize random file selection by reducing subshell calls and simplifying array operations To improve performance and reduce the number of subshell calls, consider using the $RANDOM Bash variable directly for generating random indices instead of using $((RANDOM % ...)). This can be achieved by using arithmetic expansion and the modulo operator within the array index itself. benchmark/benchmark.sh [39-45] -for i in {1..3}; do - # Generate random index - rand_index=$((RANDOM % ${#category_files[@]})) - selected_files+=("${category_files[$rand_index]}") +for ((i=0; i<3; i++)); do + # Generate random index and select file in one step + selected_files+=("${category_files[RANDOM % ${#category_files[@]}]}") # Remove the selected file to avoid duplicates - category_files=("${category_files[@]:0:$rand_index}" "${category_files[@]:$((rand_index + 1))}") + unset 'category_files[RANDOM % ${#category_files[@]}]' + category_files=("${category_files[@]}") done Apply this suggestion Suggestion importance[1-10]: 3 Why: The suggestion aims to optimize performance by reducing subshell calls, but the proposed changes introduce an error by using unset incorrectly, which does not effectively remove the element from the array. This makes the suggestion less practical.	3

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