ddl: make sure put key into ETCD monotonously (#52381)

[ti-chi-bot]

This is an automated cherry-pick of #52381

What problem does this PR solve?

Issue Number: close #47060 and close #52335

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 75.00000% with 9 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (release-8.1@5af2884). Click here to learn what that means.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #52483   +/-   ##
================================================
  Coverage               ?   72.2803%           
================================================
  Files                  ?       1470           
  Lines                  ?     427574           
  Branches               ?          0           
================================================
  Hits                   ?     309052           
  Misses                 ?      99208           
  Partials               ?      19314           

Flag	Coverage Δ
unit	71.1251% <75.0000%> (?)

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

Components	Coverage Δ
dumpling	53.9957% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.1285% <0.0000%> (?)

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, zimulala

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• pkg/ddl/OWNERS [Benjamin2037,zimulala]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-07 11:08:08.552567459 +0000 UTC m=+960242.309703024: ☑️ agreed by zimulala.
• 2024-05-08 06:17:14.661687619 +0000 UTC m=+1029188.418823189: ☑️ agreed by Benjamin2037.

[Benjamin2037]

/retest

[wjhuang2016]

/retest