statistics: fix some problem related to stats async load (#57723) (#57774) | tidb-test=2076e2fac85c636e0f3e0f287efc82465f62476a

[winoros]

close #57722, close #57735

What problem does this PR solve?

Issue Number: close #xxx

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

[jebter]

/retest

[jebter]

/retest

[codecov]

Codecov Report

Attention: Patch coverage is 79.06977% with 9 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.1-20241203-v8.1.1@a7df4f9). Learn more about missing BASE report.

Additional details and impacted files

@@                       Coverage Diff                        @@
##             release-8.1-20241203-v8.1.1     #57946   +/-   ##
================================================================
  Coverage                               ?   71.2132%           
================================================================
  Files                                  ?       1466           
  Lines                                  ?     423108           
  Branches                               ?          0           
================================================================
  Hits                                   ?     301309           
  Misses                                 ?     101324           
  Partials                               ?      20475           

Flag	Coverage Δ
unit	71.2132% <79.0697%> (?)

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

Components	Coverage Δ
dumpling	52.9656% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.3586% <0.0000%> (?)

[ti-chi-bot]

@hawkingrei: Your lgtm message is repeated, so it is ignored.

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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, time-and-fate

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-04 06:10:58.765372676 +0000 UTC m=+1221646.385027191: ☑️ agreed by hawkingrei.
• 2024-12-05 04:16:25.858954428 +0000 UTC m=+1301173.478608941: ☑️ agreed by time-and-fate.

[jebter]

/retest