statistics: sync load will be attempted at most 3 times

[hawkingrei]

What problem does this PR solve?

Issue Number: close #52831

Problem Summary:

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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 75.3070%. Comparing base (1455d45) to head (0e063a9).
Report is 301 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56471        +/-   ##
================================================
+ Coverage   73.3557%   75.3070%   +1.9513%     
================================================
  Files          1624       1646        +22     
  Lines        448404     456377      +7973     
================================================
+ Hits         328930     343684     +14754     
+ Misses        99315      91466      -7849     
- Partials      20159      21227      +1068     

Flag	Coverage Δ
integration	50.3353% <25.0000%> (?)
unit	72.4497% <50.0000%> (+0.0029%)	⬆️

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

Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	52.2859% <ø> (+6.7435%)	⬆️