importinto: disable switching to 'import mode' when global sort

[D3Hunter]

What problem does this PR solve?

Issue Number: close #60361

Problem Summary:

What changed and how does it work?

disable switch to import mode when using global sort, no change for local sort

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 @D3Hunter. Thanks for your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.6838%. Comparing base (be7ebdb) to head (80b8502).
Report is 507 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #60363        +/-   ##
================================================
+ Coverage   73.1542%   73.6838%   +0.5296%     
================================================
  Files          1710       1710                
  Lines        472797     473785       +988     
================================================
+ Hits         345871     349103      +3232     
+ Misses       105675     103495      -2180     
+ Partials      21251      21187        -64     

Flag	Coverage Δ
integration	42.9833% <0.0000%> (?)
unit	72.4986% <100.0000%> (+0.1358%)	⬆️

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

Components	Coverage Δ
dumpling	52.6910% <ø> (ø)
parser	∅ <ø> (∅)
br	47.2451% <ø> (+0.0416%)	⬆️

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[D3Hunter]

/retest

[tiprow]

@D3Hunter: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

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[D3Hunter]

/retest

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[D3Hunter]

/retest

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[Benjamin2037]

LGTM

[GMHDBJD]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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Needs approval from an approver in each of these files:

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-04-02 08:20:09.635515026 +0000 UTC m=+1639703.319751122: ☑️ agreed by Benjamin2037.
• 2025-04-02 08:24:06.217242907 +0000 UTC m=+1639939.901479002: ☑️ agreed by GMHDBJD.

[D3Hunter]

/cherry-pick feature/release-8.1-gsort-test

[ti-chi-bot]

@D3Hunter: once the present PR merges, I will cherry-pick it on top of feature/release-8.1-gsort-test in the new PR and assign it to you.

In response to this:

/cherry-pick feature/release-8.1-gsort-test

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[D3Hunter]

/retest

[tiprow]

@D3Hunter: 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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[ti-chi-bot]

@D3Hunter: new pull request created to branch feature/release-8.1-gsort-test: #60379.
But this PR has conflicts, please resolve them!

In response to this:

/cherry-pick feature/release-8.1-gsort-test

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.5: #62027.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #62028.