[shaunpatterson]

Build the heap slice and call heap.Init (O(n)) instead of n×heap.Push (per-element interface boxing).

BenchmarkMergeSorted/MergeSorted (10000 lists × 100 uids): allocs/op 20.02k→10.01k (-50%), B/op 11.46Mi→8.86Mi (-22.7%).

---

Independent change; branched from 4b9b399d (no dependency on the other PRs in this set). Verified: package unit tests pass + Go benchmark (benchstat, p<0.01). Numbers are single-thread microbenchmarks; not yet run through the Docker integration suite.

Summary by CodeRabbit

• Performance
  • Improved initialization efficiency when merging UID lists. Output and behavior remain unchanged.

[coderabbitai]

Important

Review skipped

Review was skipped as selected files did not have any reviewable changes.

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 45c4468f-17b5-4490-86cd-601ece5c0100

📥 Commits

Reviewing files that changed from the base of the PR and between 414d90b and 0f6732c.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: 0c1422e9-f113-4b9a-afb5-dc94ed81757a

📥 Commits

Reviewing files that changed from the base of the PR and between 2c125bd and 414d90b.

📒 Files selected for processing: 1

• algo/uidlist.go

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.

📝 Walkthrough

internalMergeSortWithBuffer now preallocates heap capacity for the input lists, appends each eligible list’s first UID, and calls heap.Init once instead of calling heap.Push for each list.

Changes: UID list heap initialization

Layer / File(s)	Summary
Initialize the merge heap algo/uidlist.go	The function preallocates the heap slice, appends the first UID from each nonempty list, and initializes the heap once.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~5 minutes

Change: Refactor

Suggested reviewers: mlwelles

Merge Risk: ⚪ Minimal · up to 414d9

The heap initialization change preserves merge behavior, with no material merge risk identified.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: pre-sizing the heap in internalMergeSortWithBuffer for performance.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create a new PR

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}