planner: Choose index with statistics vs one without

[terry1purcell]

What problem does this PR solve?

Issue Number: close #46375
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 @terry1purcell. 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.

I understand the commands that are listed here.

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.

[codecov]

Codecov Report

Attention: Patch coverage is 86.36364% with 3 lines in your changes missing coverage. Please review.

Project coverage is 73.8717%. Comparing base (50ac5cc) to head (b3308ff).
Report is 9 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58593        +/-   ##
================================================
+ Coverage   73.1330%   73.8717%   +0.7387%     
================================================
  Files          1676       1677         +1     
  Lines        463595     465672      +2077     
================================================
+ Hits         339041     344000      +4959     
+ Misses       103723     100845      -2878     
+ Partials      20831      20827         -4     

Flag	Coverage Δ
integration	43.1173% <59.0909%> (?)
unit	72.6668% <86.3636%> (+0.3569%)	⬆️

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	45.7945% <ø> (+0.0299%)	⬆️

[Rustin170506]

Thanks!

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qw4990, Rustin170506

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• pkg/planner/OWNERS [Rustin170506,qw4990]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-03 03:02:47.552438161 +0000 UTC m=+665102.908442693: ☑️ agreed by qw4990.
• 2025-01-03 05:41:24.766212951 +0000 UTC m=+674620.122217490: ☑️ agreed by Rustin170506.

[ti-chi-bot]

@terry1purcell: 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
idc-jenkins-ci-tidb/check_dev	89ef254	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-sigs/prow repository. I understand the commands that are listed here.