ttl: disable paging in TTL

[lcwangchao]

What problem does this PR solve?

Issue Number: close #58342

What changed and how does it work?

disable paging in TTL

See the metrics above. Left is @@tidb_enable_paging=1 and right is @@tidb_enable_paging=0. The cop operations decreases a little (~7%)

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 @lcwangchao. Thanks for your PR.

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[codecov]

Codecov Report

Attention: Patch coverage is 95.45455% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.7805%. Comparing base (c199ddf) to head (bb4651c).
Report is 14 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #58759        +/-   ##
================================================
+ Coverage   73.0885%   74.7805%   +1.6919%     
================================================
  Files          1676       1677         +1     
  Lines        463643     476651     +13008     
================================================
+ Hits         338870     356442     +17572     
+ Misses       103924      99110      -4814     
- Partials      20849      21099       +250     

Flag	Coverage Δ
integration	44.3659% <0.0000%> (?)
unit	73.6134% <95.4545%> (+1.3270%)	⬆️

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	45.7599% <ø> (+0.0269%)	⬆️

[YangKeao]

LGTM

[bb7133]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bb7133, YangKeao

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• OWNERS [YangKeao,bb7133]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2025-01-09 02:29:04.033283728 +0000 UTC m=+407087.322115433: ☑️ agreed by YangKeao.
• 2025-01-09 02:52:47.255871684 +0000 UTC m=+408510.544703389: ☑️ agreed by bb7133.