gc: delete TiFlash placement rules in batch

[Lloyd-Pottiger]

What problem does this PR solve?

Issue Number: close #54068

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.

Improve performance of GC worker by deleting TiFlash placement rules in batch

[tiprow]

Hi @Lloyd-Pottiger. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 84.61538% with 2 lines in your changes missing coverage. Please review.

Project coverage is 56.1640%. Comparing base (8ee4897) to head (5556e74).
Report is 4 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #54071         +/-   ##
=================================================
- Coverage   72.8670%   56.1640%   -16.7031%     
=================================================
  Files          1516       1636        +120     
  Lines        434796     606981     +172185     
=================================================
+ Hits         316823     340905      +24082     
- Misses        98428     243017     +144589     
- Partials      19545      23059       +3514     

Flag	Coverage Δ
integration	37.2373% <0.0000%> (?)
unit	72.0469% <84.6153%> (+0.1841%)	⬆️

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

Components	Coverage Δ
dumpling	52.9656% <ø> (ø)
parser	∅ <ø> (∅)
br	52.7250% <ø> (+6.5922%)	⬆️

[Lloyd-Pottiger]

/cc @ywqzzy @zimulala

[GMHDBJD]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: GMHDBJD, tangenta

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• OWNERS [GMHDBJD,tangenta]
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-06-19 03:51:30.80944084 +0000 UTC m=+173217.294929671: ☑️ agreed by tangenta.
• 2024-06-19 06:18:48.503537333 +0000 UTC m=+182054.989026162: ☑️ agreed by GMHDBJD.

[Lloyd-Pottiger]

/retest

[tiprow]

@Lloyd-Pottiger: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[tiprow]

@Lloyd-Pottiger: 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	570f3b4	link	true	/test tidb_parser_test
fast_test_tiprow	570f3b4	link	true	/test fast_test_tiprow

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[Lloyd-Pottiger]

/retest

[tiprow]

@Lloyd-Pottiger: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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.

[JaySon-Huang]

@Lloyd-Pottiger describes your enhancement in the release note please

[Lloyd-Pottiger]

@Lloyd-Pottiger describes your enhancement in the release note please

done

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #54406.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #54407.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #54408.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #54409.