cluster: no more redundant etcd writes when ReportMinResolvedTS is called (#5966)

[ti-chi-bot]

This is an automated cherry-pick of #5966

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

What problem does this PR solve?

Issue Number: Close #5965

What is changed and how does it work?

no more redundant etcd writes when SetMinResolvedTS is called

Check List

Tests

• Unit test
• Manual test (add detailed scripts or steps below)
  • This PR is based on c64be1f
  • Make putStoreLocked called by SetMinResolvedTS slower 7a47041
  • tiup playground v6.5.0 --kv=15 --db=1 --pd=1 --tiflash=0 --pd.binpath=bin/pd-server
  • The problem can be reproduced in grafana
    • 
    • 
  • putStoreLocked was removed in this PR and replaced with c.core.PutStore(newStore), so it can be considered fixed.

Code changes

Side effects

Related changes

• Need to cherry-pick to the release branch

Release note

Fixed an issue where ETCD write delay could cause PD OOM.

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• lhy1024
• rleungx

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[codecov]

Codecov Report

Base: 75.51% // Head: 75.61% // Increases project coverage by +0.10% 🎉

Coverage data is based on head (5ef0e32) compared to base (b04f0a9).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-6.5    #5979      +/-   ##
===============================================
+ Coverage        75.51%   75.61%   +0.10%     
===============================================
  Files              330      330              
  Lines            32952    32951       -1     
===============================================
+ Hits             24884    24917      +33     
+ Misses            5911     5885      -26     
+ Partials          2157     2149       -8     

Flag	Coverage Δ
unittests	75.61% <100.00%> (+0.10%)	⬆️

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

Impacted Files	Coverage Δ
server/cluster/cluster.go	81.87% <100.00%> (+0.41%)	⬆️
pkg/errs/errs.go	75.00% <0.00%> (-25.00%)	⬇️
server/storage/hot_region_storage.go	79.23% <0.00%> (-3.83%)	⬇️
pkg/etcdutil/etcdutil.go	84.88% <0.00%> (-3.49%)	⬇️
server/schedule/labeler/rules.go	87.50% <0.00%> (-2.28%)	⬇️
server/region_syncer/client.go	86.56% <0.00%> (-1.50%)	⬇️
server/schedule/hbstream/heartbeat_streams.go	71.71% <0.00%> (-1.02%)	⬇️
pkg/btree/btree_generic.go	86.34% <0.00%> (-0.93%)	⬇️
server/schedule/operator/step.go	73.09% <0.00%> (-0.72%)	⬇️
server/server.go	74.90% <0.00%> (-0.25%)	⬇️
... and 14 more

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[nolouch]

/merge

[ti-chi-bot]

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[ti-chi-bot]

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

Commit hash: 5ef0e32