br: fix register_test failed error for flaky test

[Leavrth]

What problem does this PR solve?

Issue Number: close #46848

Problem Summary:
the unit test failed in the flaky test

What is changed and how it works?

fix the unit test

Check List

Tests

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

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 @Leavrth. 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

Merging #46991 (62611ca) into master (ebe334f) will increase coverage by 10.1783%.
Report is 321 commits behind head on master.
The diff coverage is 50.0000%.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #46991         +/-   ##
=================================================
+ Coverage   71.9162%   82.0946%   +10.1783%     
=================================================
  Files          1439       2495       +1056     
  Lines        346158     683695     +337537     
=================================================
+ Hits         248944     561277     +312333     
- Misses        76967     101431      +24464     
- Partials      20247      20987        +740     

Flag	Coverage Δ
integration	49.0067% <ø> (?)
unit	79.4409% <50.0000%> (+7.5246%)	⬆️

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

Components	Coverage Δ
dumpling	73.6130% <ø> (+17.3001%)	⬆️
parser	∅ <ø> (∅)
br	72.2794% <50.0000%> (+20.8079%)	⬆️

[hawkingrei]

/test all

[hawkingrei]

/test all

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: 3pointer, YuJuncen

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Needs approval from an approver in each of these files:

• br/OWNERS [3pointer,YuJuncen]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-02-07 06:36:35.913456083 +0000 UTC m=+338721.480225968: ☑️ agreed by YuJuncen.
• 2024-02-07 08:08:00.760385575 +0000 UTC m=+344206.327155465: ☑️ agreed by 3pointer.

[tiprow]

@Leavrth: The following tests 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	62611ca	link	true	/test tidb_parser_test
tiprow_fast_test	62611ca	link	true	/test tiprow_fast_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/test-infra repository. I understand the commands that are listed here.