scheduler: fix inaccurate statistics and config (#3949)

[ti-chi-bot]

This is an automated cherry-pick of #3949

Signed-off-by: HunDunDM [email protected]

What problem does this PR solve?

What is changed and how it works?

• scheduler: fix inaccurate statistics and config

Check List

Tests

• Unit test

Code changes

Side effects

Related changes

• Need to cherry-pick to the release branch

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lhy1024
• nolouch

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[HunDunDM]

A small amount of code for #3658 , #3833 , #3921 will be introduced.

[nolouch]

lgtm

[HunDunDM]

/rebuild

[lhy1024]

/merge

[ti-chi-bot]

@lhy1024: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 7132f2a

[HunDunDM]

/merge

[ti-chi-bot]

@HunDunDM: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 599f302

[codecov]

Codecov Report

Merging #3964 (43094f7) into release-5.0 (7f6d57e) will decrease coverage by 0.00%.
The diff coverage is 89.58%.

@@               Coverage Diff               @@
##           release-5.0    #3964      +/-   ##
===============================================
- Coverage        74.84%   74.84%   -0.01%     
===============================================
  Files              245      245              
  Lines            24308    24321      +13     
===============================================
+ Hits             18193    18202       +9     
- Misses            4501     4505       +4     
  Partials          1614     1614              

Flag	Coverage Δ
unittests	74.84% <89.58%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
server/schedule/operator/operator.go	95.93% <71.42%> (-0.62%)	⬇️
server/schedulers/hot_region.go	82.43% <90.00%> (+1.58%)	⬆️
server/schedulers/hot_region_config.go	82.47% <100.00%> (+0.55%)	⬆️
server/schedulers/utils.go	93.67% <100.00%> (-0.24%)	⬇️
server/region_syncer/server.go	83.08% <0.00%> (-5.89%)	⬇️
server/election/leadership.go	83.52% <0.00%> (-3.53%)	⬇️
server/schedule/operator/step.go	66.77% <0.00%> (-2.33%)	⬇️
server/tso/allocator_manager.go	76.74% <0.00%> (-1.83%)	⬇️
client/base_client.go	82.98% <0.00%> (-1.55%)	⬇️
tools/pd-ctl/pdctl/command/operator.go	65.99% <0.00%> (-1.22%)	⬇️
... and 11 more

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