infoschema_v2: remove schemaTableInfos call of fetchAllTablePlacements

[GMHDBJD]

What problem does this PR solve?

Issue Number: ref #55394

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
  original show placement 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 @GMHDBJD. Thanks for your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.2593%. Comparing base (499e45f) to head (9d8c3c1).
Report is 127 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #55958         +/-   ##
=================================================
- Coverage   72.8489%   59.2593%   -13.5897%     
=================================================
  Files          1604       1786        +182     
  Lines        445733     658549     +212816     
=================================================
+ Hits         324712     390252      +65540     
- Misses       101000     243999     +142999     
- Partials      20021      24298       +4277     

Flag	Coverage Δ
integration	41.5302% <0.0000%> (?)
unit	74.3352% <100.0000%> (+2.3739%)	⬆️

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

Components	Coverage Δ
dumpling	53.1514% <ø> (+0.1947%)	⬆️
parser	∅ <ø> (∅)
br	63.6297% <ø> (+17.8888%)	⬆️

[GMHDBJD]

/retest

[tiprow]

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[GMHDBJD]

/retest

[tiprow]

@GMHDBJD: 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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[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tangenta, wjhuang2016

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-09-23 07:43:02.114346465 +0000 UTC m=+1465451.854770405: ☑️ agreed by wjhuang2016.
• 2024-09-25 05:58:47.404148186 +0000 UTC m=+1631997.144572124: ☑️ agreed by tangenta.

[tiprow]

@GMHDBJD: 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
fast_test_tiprow	9d8c3c1	link	true	/test fast_test_tiprow
tidb_parser_test	9d8c3c1	link	true	/test tidb_parser_test

Full PR test history. Your PR dashboard.

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