br: Add a new test to check running status when gc safepoint exceeds global checkpoint

[RidRisR]

What problem does this PR solve?

Issue Number: ref #52485

Problem Summary:

1. Add a unit test to check running status when gc safepoint exceeds global checkpoint
2. Add a integration test to check if checkpoint remains when log task is paused

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[tiprow]

Hi @RidRisR. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.6330%. Comparing base (eb19c10) to head (20c598f).
Report is 211 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55843        +/-   ##
================================================
+ Coverage   72.8613%   75.6330%   +2.7716%     
================================================
  Files          1595       1657        +62     
  Lines        449065     477040     +27975     
================================================
+ Hits         327195     360800     +33605     
+ Misses       101574      94668      -6906     
- Partials      20296      21572      +1276     

Flag	Coverage Δ
integration	50.5069% <100.0000%> (?)
unit	72.5107% <100.0000%> (+0.5731%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	52.9478% <ø> (+0.0177%)	⬆️
parser	∅ <ø> (∅)
br	59.1138% <100.0000%> (+13.7382%)	⬆️

[Leavrth]

rest LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Leavrth, YuJuncen

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Needs approval from an approver in each of these files:

• br/OWNERS [Leavrth,YuJuncen]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-19 03:35:37.047738374 +0000 UTC m=+1105006.788162311: ☑️ agreed by Leavrth.
• 2024-09-26 03:00:15.391451712 +0000 UTC m=+1707685.131875668: ☑️ agreed by YuJuncen.

[tiprow]

@RidRisR: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
tidb_parser_test	4a6bce7	link	true	/test tidb_parser_test

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.