*: fix some comment and a tiny mistake of test

[lcwangchao]

Summary by CodeRabbit

• Bug Fixes

  • Corrected test validation logic in transaction commit timeout handling to properly capture and verify expected values.

• Documentation

  • Updated API documentation to clarify the return value behavior when accessing missing keys.

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[coderabbitai]

📝 Walkthrough

Walkthrough

Two minor updates: a test fix where a variable assignment replaces a discarded value in TestFailCommitTimeout, and a documentation comment update for Getter.Get clarifying that missing keys return an empty ValueEntry instead of nil.

Changes

Cohort / File(s)	Summary
Test Fix integration_tests/2pc_test.go	Changed second txn2.Get(...) call to assign result to value variable instead of discarding with _, overwriting the previous "a" value retrieval
Documentation Update kv/kv.go	Updated Getter.Get interface comment to reflect that missing keys return an empty ValueEntry with ErrNotExist, rather than nil with ErrNotExist

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A test got fixed with care so bright,
Docs now gleam with truthful light,
Empty values now declare their name,
Variables assigned, all set aflame! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the pull request as fixing a comment and a test mistake across multiple files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2026-01-26 09:43:10.434685057 +0000 UTC m=+1005418.048641913: ☑️ agreed by cfzjywxk.

[ti-chi-bot]

@wfxr: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cfzjywxk, wfxr

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Needs approval from an approver in each of these files:

• OWNERS [cfzjywxk]

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