*: use DDL subscriber updating stats meta (#57872)

[ti-chi-bot]

This is an automated cherry-pick of

1. 5a25eea
2. d6b313f
3. 7e5096e
4. 27b5392
5. 0dcadef
6. 1bf4bf1

What problem does this PR solve?

Issue Number: close #57871

Problem Summary:

What changed and how does it work?

In this PR, we began using the DDL notifier to handle all DDL events and update the stats meta accordingly.

To maintain the old behavior, we do not register it when the stats lease is less than 1. This means that we won't handle the DDL event for unit tests at all unless you explicitly handle it manually.

In the future, we might want to handle this in unit tests by default. However, doing so could disrupt many existing test cases. For now, I prefer to maintain the old behavior. I plan to migrate to the new approach eventually, but I currently don't have enough time to update all the tests that would break.

Check List

Tests

• Unit test
• Integration test
• Manual test
• 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

[codecov]

Codecov Report

Attention: Patch coverage is 63.67188% with 93 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.5@71bc625). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #58387   +/-   ##
================================================
  Coverage               ?   57.0385%           
================================================
  Files                  ?       1770           
  Lines                  ?     627656           
  Branches               ?          0           
================================================
  Hits                   ?     358006           
  Misses                 ?     245593           
  Partials               ?      24057           

Flag	Coverage Δ
integration	37.1239% <12.8514%> (?)
unit	72.7253% <62.5000%> (?)

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

Components	Coverage Δ
dumpling	52.8711% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.2984% <0.0000%> (?)

[Rustin170506]

Thanks!

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lance6716, Rustin170506

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [Rustin170506,lance6716]
• pkg/ddl/OWNERS [lance6716]
• pkg/domain/OWNERS [lance6716]
• pkg/planner/OWNERS [Rustin170506]
• pkg/statistics/OWNERS [Rustin170506]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-12-20 15:35:32.513260244 +0000 UTC m=+1230322.602062787: ☑️ agreed by Rustin170506.
• 2024-12-23 04:18:40.732858677 +0000 UTC m=+1448910.821661205: ☑️ agreed by lance6716.

[Rustin170506]

/test all

[tiprow]

@Rustin170506: No presubmit jobs available for pingcap/tidb@release-8.5

In response to this:

/test all

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[Rustin170506]

/retest

[Rustin170506]

/test all

[tiprow]

@Rustin170506: No presubmit jobs available for pingcap/tidb@release-8.5

In response to this:

/test all

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.