ddl: improve priority of suppressErrorTooLongKeyKey for DM

[lance6716]

What problem does this PR solve?

Issue Number: close #55138

Problem Summary:

seems suppressErrorTooLongKeyKey is only used by DM, so increase its priority

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 @lance6716. Thanks for your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.4382%. Comparing base (0a2d5be) to head (86f3656).
Report is 157 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #55164        +/-   ##
================================================
+ Coverage   74.8131%   75.4382%   +0.6251%     
================================================
  Files          1570       1570                
  Lines        364718     439704     +74986     
================================================
+ Hits         272857     331705     +58848     
- Misses        72124      87472     +15348     
- Partials      19737      20527       +790     

Flag	Coverage Δ
integration	50.5542% <100.0000%> (?)
unit	71.7828% <100.0000%> (-1.9661%)	⬇️

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

Components	Coverage Δ
dumpling	52.9567% <ø> (-2.2327%)	⬇️
parser	∅ <ø> (∅)
br	63.1513% <ø> (+15.4606%)	⬆️

[lance6716]

/retest

[tiprow]

@lance6716: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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[D3Hunter]

/hold

for comments

[GMHDBJD]

LGTM

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-08 09:48:17.512538173 +0000 UTC m=+518227.379637272: ☑️ agreed by D3Hunter.
• 2024-08-08 10:22:44.471189852 +0000 UTC m=+520294.338288938: ☑️ agreed by GMHDBJD.

[D3Hunter]

/unhold

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: D3Hunter, GMHDBJD, wjhuang2016

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• pkg/ddl/OWNERS [wjhuang2016]

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #55772.