schedulers: evict-leader supports schedule the regions with unhealthy peers

[HunDunDM]

Signed-off-by: HunDunDM [email protected]

What problem does this PR solve?

close #4093

What is changed and how it works?

schedulers: evict-leader supports schedule the regions with unhealthy peers

Check List

Tests

• Unit test

Code changes

Side effects

Related changes

• Need to cherry-pick to the release branch

Release note

`evict-leader-scheduler` supports schedule the regions with unhealthy peers.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• disksing
• lhy1024

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After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[codecov]

Codecov Report

Merging #4096 (a278b66) into master (40b2f85) will decrease coverage by 0.07%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4096      +/-   ##
==========================================
- Coverage   74.64%   74.56%   -0.08%     
==========================================
  Files         258      258              
  Lines       26329    26337       +8     
==========================================
- Hits        19653    19639      -14     
- Misses       4930     4945      +15     
- Partials     1746     1753       +7     

Flag	Coverage Δ
unittests	74.56% <100.00%> (-0.08%)	⬇️

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

Impacted Files	Coverage Δ
server/schedulers/evict_leader.go	75.48% <100.00%> (+0.98%)	⬆️
server/tso/local_allocator.go	71.62% <0.00%> (-6.76%)	⬇️
server/region_syncer/client.go	77.46% <0.00%> (-4.23%)	⬇️
server/tso/tso.go	61.36% <0.00%> (-3.98%)	⬇️
pkg/etcdutil/etcdutil.go	84.70% <0.00%> (-3.53%)	⬇️
client/base_client.go	81.52% <0.00%> (-2.18%)	⬇️
server/tso/allocator_manager.go	66.50% <0.00%> (-1.50%)	⬇️
server/server.go	71.40% <0.00%> (-1.20%)	⬇️
server/config/persist_options.go	91.53% <0.00%> (-0.77%)	⬇️
server/grpc_service.go	47.05% <0.00%> (-0.23%)	⬇️
... and 8 more

---

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[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: a278b66

[HunDunDM]

/run-unit-test

[HunDunDM]

/run-unit-test

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4130.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4131.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4132.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4133.