planner: optimize the performance of PointPlan for Instance Plan Cache

[qw4990]

What problem does this PR solve?

Issue Number: ref #54057

Problem Summary: planner: optimizer the performance of PointPlan for Instance Plan Cache

What changed and how does it work?

planner: optimizer the performance of PointPlan for Instance Plan Cache

9X faster:

Original Clone:
 6381717               160.8 ns/op           801 B/op          5 allocs/op

Fast Clone:
69654463                17.13 ns/op            0 B/op          0 allocs/op

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 @qw4990. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 87.83784% with 9 lines in your changes missing coverage. Please review.

Project coverage is 73.4432%. Comparing base (426ce3e) to head (e6d70cb).
Report is 6 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #57260        +/-   ##
================================================
+ Coverage   72.9810%   73.4432%   +0.4621%     
================================================
  Files          1660       1660                
  Lines        458645     458745       +100     
================================================
+ Hits         334724     336917      +2193     
+ Misses       103364     101350      -2014     
+ Partials      20557      20478        -79     

Flag	Coverage Δ
integration	43.4460% <9.4594%> (?)
unit	72.2820% <87.8378%> (-0.0488%)	⬇️

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

Components	Coverage Δ
dumpling	52.7673% <ø> (ø)
parser	∅ <ø> (∅)
br	45.0637% <ø> (+0.0093%)	⬆️

[qw4990]

/test unit-test

[tiprow]

@qw4990: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/test unit-test

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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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• pkg/planner/OWNERS [hawkingrei,time-and-fate]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-11 05:23:20.583997663 +0000 UTC m=+247362.774866645: ☑️ agreed by hawkingrei.
• 2024-11-11 05:29:11.224247023 +0000 UTC m=+247713.415116020: ☑️ agreed by time-and-fate.

[elsa0520]

LGTM