Fix the incorrect initialization of mv_base_idx_vec_ in constuctor of txservice::HashPartitionDataSyncScanCc

[lzxddz]

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• Add tests for the change
• Document changes
• Reference the link of issue using fixes eloqdb/tx_service#issue_id
• Reference the link of RFC if exists
• Pass ./mtr --suite=mono_main,mono_multi,mono_basic

Summary by CodeRabbit

• Chores
  • Optimized internal memory allocation for data synchronization operations to improve resource efficiency.

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📥 Commits

Reviewing files that changed from the base of the PR and between 5bb8a12 and f67db7a.

📒 Files selected for processing (1)

• src/store/snapshot_manager.cpp (1 hunks)

Walkthrough

In the HashPartitionDataSyncScanCc constructor, a vector initialization is modified: mv_base_idx_vec_.resize(scan_batch_size) is replaced with mv_base_idx_vec_.reserve(scan_batch_size). This changes the initial size from scan_batch_size elements to zero while maintaining capacity.

Changes

Cohort / File(s)	Change Summary
Memory Allocation Optimization include/cc/cc_request.h	Replaced resize() with reserve() in HashPartitionDataSyncScanCc constructor for mv_base_idx_vec_, changing initial vector size from populated to empty while preserving capacity allocation.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested labels

bug

Suggested reviewers

• thweetkomputer
• liunyl

Poem

🐰 A vector once stuffed to the brim,
Now reserves its space on a whim,
From resize to reserve, the change takes flight,
Capacity allocated, but size feels light!
Memory dances more gently tonight. ✨

Pre-merge checks and finishing touches

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description Check	⚠️ Warning	The pull request description is entirely composed of an empty checklist template with no actual content. The description contains only unchecked checkboxes without any description of the problem, the solution, or why the change is necessary. Critical information is missing, including no issue reference (the fixes link), no explanation of the initialization problem, no indication whether tests have been added, and no status on test suite execution. While the template structure is followed, the lack of substantive content makes this a significantly incomplete submission.	The description needs to be populated with a meaningful explanation of the change. The author should provide context about why the change from resize() to reserve() is necessary, reference any related issue using fixes eloqdb/tx_service#issue_id, indicate whether tests have been added for this change, and document when the test suite has been run successfully. The checklist items should reflect the actual completion status of each task.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title accurately describes the main change in the pull request: fixing the incorrect initialization of mv_base_idx_vec_ in the HashPartitionDataSyncScanCc constructor. The raw summary confirms this change, showing the replacement of resize() with reserve() for this member variable. The title is specific, concise, and clearly conveys the primary change without being vague or misleading.

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