scheduler: dynamically adjust the retry limit according to the operator

[HunDunDM]

Signed-off-by: HunDunDM hundundm@gmail.com

What problem does this PR solve?

related #3744

What is changed and how it works?

• scheduler: dynamically adjust the retry limit according to the operator

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:

• disksing
• nolouch

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[HunDunDM]

/rebuild

[HunDunDM]

/rebuild

[HunDunDM]

/rebuild

[codecov]

Codecov Report

Merging #4007 (539618e) into master (c328f3a) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4007      +/-   ##
==========================================
+ Coverage   74.49%   74.52%   +0.02%     
==========================================
  Files         257      257              
  Lines       25948    25980      +32     
==========================================
+ Hits        19331    19361      +30     
- Misses       4883     4886       +3     
+ Partials     1734     1733       -1     

Flag	Coverage Δ
unittests	74.52% <100.00%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
server/schedulers/balance_leader.go	91.55% <100.00%> (+0.46%)	⬆️
server/schedulers/balance_region.go	88.59% <100.00%> (+0.52%)	⬆️
server/schedulers/utils.go	94.67% <100.00%> (+0.29%)	⬆️
server/schedule/region_scatterer.go	80.70% <0.00%> (-4.39%)	⬇️
pkg/etcdutil/etcdutil.go	84.70% <0.00%> (-3.53%)	⬇️
server/server.go	72.03% <0.00%> (-0.76%)	⬇️
server/tso/tso.go	58.56% <0.00%> (-0.56%)	⬇️
server/tso/allocator_manager.go	66.44% <0.00%> (-0.51%)	⬇️
server/schedule/operator/step.go	68.10% <0.00%> (-0.34%)	⬇️
client/client.go	71.54% <0.00%> (-0.28%)	⬇️
... and 8 more

---

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[bufferflies]

lgtm

[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: 539618e

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4046.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4047.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4048.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #4049.