br: fix flaky test

[Leavrth]

What problem does this PR solve?

Issue Number: close #52547

Problem Summary:
the flaky test TestGetTSWithRetry takes too much time.

What changed and how does it work?

less retry

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 @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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[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #52573 (dd64756) into master (312b69f) will increase coverage by 3.7913%.
Report is 50 commits behind head on master.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #52573        +/-   ##
================================================
+ Coverage   72.2371%   76.0285%   +3.7913%     
================================================
  Files          1467       1476         +9     
  Lines        426991     444503     +17512     
================================================
+ Hits         308446     337949     +29503     
+ Misses        99430      86061     -13369     
- Partials      19115      20493      +1378     

Flag	Coverage Δ
integration	51.6133% <0.0000%> (?)
unit	72.1552% <100.0000%> (+1.0268%)	⬆️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	59.3028% <100.0000%> (+18.1774%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• br/OWNERS [3pointer]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-12 10:10:58.489000361 +0000 UTC m=+1216320.016540907: ☑️ agreed by hawkingrei.
• 2024-04-17 05:57:41.410171161 +0000 UTC m=+404080.521217611: ☑️ agreed by 3pointer.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #52665.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #52666.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #52667.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #52668.