disttask: optimize metrics

[okJiang]

What problem does this PR solve?

Issue Number: close #48592, #48591

Problem Summary:

What is changed and how it works?

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]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[tiprow]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[okJiang]

/ok-to-test

[codecov]

Codecov Report

Merging #48663 (42f4fb3) into master (844ba42) will increase coverage by 1.5357%.
The diff coverage is 0.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #48663        +/-   ##
================================================
+ Coverage   71.0836%   72.6193%   +1.5357%     
================================================
  Files          1365       1389        +24     
  Lines        404263     411353      +7090     
================================================
+ Hits         287365     298722     +11357     
+ Misses        96945      93704      -3241     
+ Partials      19953      18927      -1026     

Flag	Coverage Δ
integration	43.4974% <0.0000%> (?)

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

Components	Coverage Δ
dumpling	53.9874% <ø> (ø)
parser	∅ <ø> (∅)
br	48.7739% <ø> (-4.3090%)	⬇️

[Benjamin2037]

LGTM

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Benjamin2037, wjhuang2016

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 [Benjamin2037,wjhuang2016]
• pkg/disttask/OWNERS [Benjamin2037,wjhuang2016]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-17 14:45:42.236221121 +0000 UTC m=+4433139.823331259: ☑️ agreed by Benjamin2037.
• 2023-11-17 14:59:26.62499321 +0000 UTC m=+4433964.212103355: ☑️ agreed by wjhuang2016.

[okJiang]

/retest

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #48689.