ddl: fix reorg handle not resumed after changing DDL owner

[tangenta]

What problem does this PR solve?

Issue Number: close #56506

Problem Summary:

1. doneTaskKeeper starts from 0, but taskIDAllocator starts from 1.
2. "not owner" error is eaten by context.Canceled.

What changed and how does it work?

Allocate task ID from 0.

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 @tangenta. Thanks for your PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.1233%. Comparing base (ff1b241) to head (564b1ed).
Report is 749 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #56507        +/-   ##
================================================
+ Coverage   73.3181%   76.1233%   +2.8051%     
================================================
  Files          1625       1649        +24     
  Lines        448639     465471     +16832     
================================================
+ Hits         328934     354332     +25398     
+ Misses        99547      89264     -10283     
- Partials      20158      21875      +1717     

Flag	Coverage Δ
integration	51.8330% <92.3076%> (?)
unit	72.4549% <100.0000%> (+0.0082%)	⬆️

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Components	Coverage Δ
dumpling	52.9478% <ø> (ø)
parser	∅ <ø> (∅)
br	61.4738% <ø> (+15.9281%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: D3Hunter, lance6716

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Details

Needs approval from an approver in each of these files:

• OWNERS [D3Hunter,lance6716]
• pkg/ddl/OWNERS [D3Hunter,lance6716]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-10-09 08:19:27.705473283 +0000 UTC m=+1034123.125686287: ☑️ agreed by D3Hunter.
• 2024-10-11 01:47:03.255840293 +0000 UTC m=+1183378.676053300: ☑️ agreed by lance6716.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #56571.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #57021.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #57926.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #59065.