executor: fix data inconsistency after load data ... replace into ... (#56415)

[ti-chi-bot]

This is an automated cherry-pick of #56415

What problem does this PR solve?

Issue Number: close #56408

Problem Summary:

What changed and how does it work?

The reason is the bool flag returned by removeRow was not rightly handled in handleDuplicateKey.

// removeRow removes the duplicate row and cleanup its keys in the key-value map.
// But if the to-be-removed row equals to the to-be-added row, no remove or add
// things to do and return (true, nil).

If we load a existed row, removeRow will return (true, nil), handleDuplicateKey should also return (true, nil)

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.

Fix data inconsistency after load data ... replace into ...

[fzzf678]

/retest

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CbcWestwolf, fzzf678

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-09 09:29:52.938103914 +0000 UTC m=+1038348.358316921: ☑️ agreed by fzzf678.
• 2024-10-09 09:42:29.089935733 +0000 UTC m=+1039104.510148745: ☑️ agreed by CbcWestwolf.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #56508   +/-   ##
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  Coverage               ?   72.0071%           
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  Files                  ?       1415           
  Lines                  ?     412509           
  Branches               ?          0           
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  Hits                   ?     297036           
  Misses                 ?      95563           
  Partials               ?      19910           

Flag	Coverage Δ
unit	72.0071% <100.0000%> (?)

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

Components	Coverage Δ
dumpling	52.9400% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.5412% <0.0000%> (?)