ddl: set writer memory size and merge part size by resource (#52329)

[ti-chi-bot]

This is an automated cherry-pick of #52329

What problem does this PR solve?

Issue Number: close #52328

Problem Summary:

What changed and how does it work?

Complies with the resource usage restrictions of the dist task framework.

Before this PR:

[2024/04/11 07:17:31.146 +00:00] [INFO] [backfilling_operators.go:130] ["build operators that write index to cloud storage"] ["memory total"=29360128000] ["memory used"=1461342208] ["memory size"=1162449408]
[2024/04/11 08:17:11.197 +00:00] [INFO] [backfilling_operators.go:130] ["build operators that write index to cloud storage"] ["memory total"=29360128000] ["memory used"=24287723520] ["memory size"=211350186]
[2024/04/11 09:07:54.000 +00:00] [INFO] [backfilling_operators.go:130] ["build operators that write index to cloud storage"] ["memory total"=29360128000] ["memory used"=11104190464] ["memory size"=760664064]

The memory size is very unstable.

After this PR:

[2024/04/12 06:18:01.685 +00:00] [INFO] [backfilling_operators.go:231] ["build add index cloud storage operators"] [task-id=30001] [subtask-id=30001] [jobID=108] [memCap=6.836GiB] [memSizePerIdx=291.7MiB] [avgRowSize=247] [reader=4] [writer=4]
[2024/04/12 07:11:21.145 +00:00] [INFO] [backfilling_operators.go:231] ["build add index cloud storage operators"] [task-id=30001] [subtask-id=30002] [jobID=108] [memCap=6.836GiB] [memSizePerIdx=291.7MiB] [avgRowSize=247] [reader=4] [writer=4]
[2024/04/12 08:03:45.901 +00:00] [INFO] [backfilling_operators.go:231] ["build add index cloud storage operators"] [task-id=30001] [subtask-id=30003] [jobID=108] [memCap=6.836GiB] [memSizePerIdx=291.7MiB] [avgRowSize=247] [reader=4] [writer=4]

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

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-15 07:49:52.487422174 +0000 UTC m=+238011.598468624: ☑️ agreed by ywqzzy.
• 2024-04-15 07:50:54.149537757 +0000 UTC m=+238073.260584207: ☑️ agreed by lance6716.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-8.1@d936756). Click here to learn what that means.
The diff coverage is 6.2500%.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.1     #52603   +/-   ##
================================================
  Coverage               ?   72.2802%           
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  Files                  ?       1467           
  Lines                  ?     426851           
  Branches               ?          0           
================================================
  Hits                   ?     308529           
  Misses                 ?      99040           
  Partials               ?      19282           

Flag	Coverage Δ
unit	71.1499% <6.2500%> (?)

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

Components	Coverage Δ
dumpling	53.9957% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	41.0895% <0.0000%> (?)

[tangenta]

/retest