planner: add physical plan memorization for multi cascades logical alternative.

[AilinKid]

What problem does this PR solve?

Issue Number: ref #51664

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

[tiprow]

Hi @AilinKid. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.5568%. Comparing base (c44672e) to head (07360ed).
Report is 3 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58832        +/-   ##
================================================
+ Coverage   73.1281%   73.5568%   +0.4286%     
================================================
  Files          1678       1678                
  Lines        464006     464059        +53     
================================================
+ Hits         339319     341347      +2028     
+ Misses       103827     101859      -1968     
+ Partials      20860      20853         -7     

Flag	Coverage Δ
integration	42.9220% <100.0000%> (?)
unit	72.3108% <100.0000%> (-0.0179%)	⬇️

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

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	45.7359% <ø> (-0.0090%)	⬇️

[AilinKid]

/test check-dev2

[tiprow]

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

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/test check-dev2

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[AilinKid]

/ok-to-test

[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, qw4990

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• pkg/planner/OWNERS [hawkingrei,qw4990]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-10 03:08:13.410672291 +0000 UTC m=+495836.699503999: ☑️ agreed by hawkingrei.
• 2025-01-13 06:16:34.700942971 +0000 UTC m=+766337.989774677: ☑️ agreed by qw4990.

[ti-chi-bot]

@AilinKid: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-unit-test-ddlv1	cdedac4	link	true	/test pull-unit-test-ddlv1

Full PR test history. Your PR dashboard.

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. I understand the commands that are listed here.