ttl: use a pessimistic transaction to finish the job (#56516)

[ti-chi-bot]

This is an automated cherry-pick of #56516

What problem does this PR solve?

Issue Number: close #56422

Problem Summary:

When the job is finished, and at the same time the task is assigned to some TiDB node, it may fail to finish the job.

What changed and how does it work?

Use the pessimistic transaction to finish job. Then the DELETE ... FROM tidb_ttl_tasks will block UPDATE mysql.tidb_ttl_task SET owner_id = ?... (or in another direction).

If the ttl task is removed, it'll finally be removed by (m *taskManager) checkInvalidTask in the memory.

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 the issue that a TTL job cannot be finished in some situation.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 6 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-7.5@f54a797). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #56967   +/-   ##
================================================
  Coverage               ?   72.0175%           
================================================
  Files                  ?       1415           
  Lines                  ?     412626           
  Branches               ?          0           
================================================
  Hits                   ?     297163           
  Misses                 ?      95544           
  Partials               ?      19919           

Flag	Coverage Δ
unit	72.0175% <80.0000%> (?)

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	53.5649% <0.0000%> (?)

[YangKeao]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [YangKeao,lcwangchao]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-30 02:19:55.202744758 +0000 UTC m=+402708.041900297: ☑️ agreed by lcwangchao.
• 2024-10-30 02:59:43.800775404 +0000 UTC m=+405096.639930945: ☑️ agreed by YangKeao.

[hawkingrei]

/retest

[YangKeao]

/retest