planner: hide some methods and structures in statshandle package

[qw4990]

What problem does this PR solve?

Issue Number: ref #46905

Problem Summary: planner: hide some methods and structures in statshandle package

What is changed and how it works?

planner: hide some methods and structures in statshandle package

NO LOGICAL CHANGE, JUST REFACTOR.

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.

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

Merging #47797 (9f36328) into master (6dea081) will decrease coverage by 0.0005%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #47797        +/-   ##
================================================
- Coverage   71.8548%   71.8543%   -0.0006%     
================================================
  Files          1398       1398                
  Lines        405256     405160        -96     
================================================
- Hits         291196     291125        -71     
+ Misses        94414      94397        -17     
+ Partials      19646      19638         -8     

Flag	Coverage Δ
integration	∅ <ø> (?)

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

Components	Coverage Δ
dumpling	53.9913% <ø> (ø)
parser	∅ <ø> (∅)
br	52.9538% <ø> (ø)

[ti-chi-bot]

@qw4990: 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
idc-jenkins-ci-tidb/unit-test	9f36328	link	true	/test unit-test
idc-jenkins-ci-tidb/check_dev_2	9f36328	link	true	/test check-dev2
idc-jenkins-ci-tidb/check_dev	9f36328	link	true	/test check-dev

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/test-infra repository. I understand the commands that are listed here.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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Needs approval from an approver in each of these files:

• OWNERS [chrysan,hawkingrei]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-10-19 09:58:57.978604508 +0000 UTC m=+1910335.565714653: ☑️ agreed by chrysan.
• 2023-10-19 10:31:29.819962341 +0000 UTC m=+1912287.407072486: ☑️ agreed by hawkingrei.

[tiprow]

@qw4990: 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
tiprow_fast_test	9f36328	link	true	/test tiprow_fast_test

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/test-infra repository. I understand the commands that are listed here.