planner: shallow copy more field for Instance Plan Cache to improve performance

[qw4990]

What problem does this PR solve?

Issue Number: ref #54057

Problem Summary: planner: shallow copy more field for Instance Plan Cache to improve performance

What changed and how does it work?

planner: shallow copy more field for Instance Plan Cache to improve performance

These unnecessary clone operations could cause more than 10% regression in some benchmarks:

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 72.30769% with 18 lines in your changes missing coverage. Please review.

Project coverage is 56.2314%. Comparing base (b522e98) to head (603e5d6).
Report is 5 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #57201         +/-   ##
=================================================
- Coverage   73.0639%   56.2314%   -16.8325%     
=================================================
  Files          1659       1785        +126     
  Lines        458021     636943     +178922     
=================================================
+ Hits         334648     358162      +23514     
- Misses       102834     254593     +151759     
- Partials      20539      24188       +3649     

Flag	Coverage Δ
integration	36.9242% <0.0000%> (?)
unit	72.3107% <72.3076%> (-0.0300%)	⬇️

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

Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	52.3018% <ø> (+6.5942%)	⬆️

[Rustin170506]

Looks good to me. Thanks! 👍

[hawkingrei]

Can you add some performance data in this PR.

[qw4990]

Thanks, I've added a profile pic in the Description.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• pkg/planner/OWNERS [Rustin170506,hawkingrei]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-07 08:21:54.167764884 +0000 UTC m=+1115627.006920422: ☑️ agreed by Rustin170506.
• 2024-11-07 08:33:18.113658822 +0000 UTC m=+1116310.952814360: ☑️ agreed by hawkingrei.