ddl: check index key length when convert charset

[fzzf678]

What problem does this PR solve?

Issue Number: close #56930

Problem Summary:
Miss the check of index length.

What changed and how does it work?

Check the index length when convert to new charset.

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 @fzzf678. 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

Attention: Patch coverage is 64.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 57.7034%. Comparing base (da14ce7) to head (edbadfd).
Report is 324 commits behind head on master.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #56964         +/-   ##
=================================================
- Coverage   73.3379%   57.7034%   -15.6345%     
=================================================
  Files          1638       1804        +166     
  Lines        453738     648303     +194565     
=================================================
+ Hits         332762     374093      +41331     
- Misses       100565     249150     +148585     
- Partials      20411      25060       +4649     

Flag	Coverage Δ
integration	39.7119% <52.0000%> (?)
unit	73.1691% <52.0000%> (+0.6184%)	⬆️

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	63.1629% <ø> (+17.1735%)	⬆️

[fzzf678]

PTAL /cc @tangenta @CbcWestwolf

[CbcWestwolf]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CbcWestwolf, tangenta

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Needs approval from an approver in each of these files:

• OWNERS [CbcWestwolf,tangenta]
• pkg/ddl/OWNERS [tangenta]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-30 03:53:15.694807351 +0000 UTC m=+408308.533962896: ☑️ agreed by tangenta.
• 2024-11-01 04:39:03.977999887 +0000 UTC m=+583856.817155431: ☑️ agreed by CbcWestwolf.

[tiprow]

@fzzf678: 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	edbadfd	link	true	/test fast_test_tiprow

Full PR test history. Your PR dashboard.

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[fzzf678]

/retest

[tiprow]

@fzzf678: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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]

In response to a cherrypick label: new pull request created to branch release-7.1: #57441.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #57929.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #58155.