planner: automatically explore enforced plans for DataSource if it has already found an unenforced plan

[hawkingrei]

…

What problem does this PR solve?

Issue Number: close #46177

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

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.9191%. Comparing base (bf455f5) to head (89ae810).
Report is 475 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56289        +/-   ##
================================================
+ Coverage   73.4156%   74.9191%   +1.5034%     
================================================
  Files          1605       1605                
  Lines        445006     445040        +34     
================================================
+ Hits         326704     333420      +6716     
+ Misses        98251      91145      -7106     
- Partials      20051      20475       +424     

Flag	Coverage Δ
integration	29.0844% <0.0000%> (?)

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	52.9028% <ø> (+6.8718%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please ask for approval from hawkingrei, ensuring that each of them provides their approval before proceeding. For more information see the Code Review Process.

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

Needs approval from an approver in each of these files:

• OWNERS
• pkg/planner/OWNERS

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

[tiprow]

@hawkingrei: 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
fast_test_tiprow	89ae810	link	true	/test fast_test_tiprow

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.

[ti-chi-bot]

PR needs rebase.

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.

[ti-chi-bot]

@hawkingrei: 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/mysql-test	89ae810	link	true	/test mysql-test
idc-jenkins-ci-tidb/unit-test	89ae810	link	true	/test unit-test
idc-jenkins-ci-tidb/check_dev_2	89ae810	link	true	/test check-dev2
pull-integration-e2e-test	89ae810	link	true	/test pull-integration-e2e-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.

[hawkingrei]

it has been fixed.