txn: fix race in p-dml caused by Transaction.SetOption running with background flushing

[you06]

What problem does this PR solve?

Issue Number: ref #50215 close #52028

Problem Summary:

What changed and how does it work?

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.

» go test ./tests/realtikvtest/pipelineddmltest --tags=intest -race
# github.com/pingcap/tidb/tests/realtikvtest/pipelineddmltest.test
ok      github.com/pingcap/tidb/tests/realtikvtest/pipelineddmltest     64.319s

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

[tiprow]

Hi @you06. Thanks for your PR.

PRs from untrusted users cannot be marked as trusted with /ok-to-test in this repo meaning untrusted PR authors can never trigger tests themselves. Collaborators can still trigger tests on the PR using /test all.

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[you06]

lol, it's not empty...

external/com_github_tikv_client_go_v2/txnkv/transaction/txn.go:70:2: "github.com/tikv/client-go/v2/util/intest" imported as empty and not used
external/com_github_tikv_client_go_v2/txnkv/transaction/txn.go:1671:6: undefined: intest

[codecov]

Codecov Report

Merging #51913 (7ad48e5) into master (b91a1b3) will decrease coverage by 17.7665%.
Report is 12 commits behind head on master.
The diff coverage is 100.0000%.

Additional details and impacted files

@@                Coverage Diff                @@
##             master     #51913         +/-   ##
=================================================
- Coverage   72.4334%   54.6669%   -17.7665%     
=================================================
  Files          1481       1592        +111     
  Lines        365290     610436     +245146     
=================================================
+ Hits         264592     333707      +69115     
- Misses        81150     253476     +172326     
- Partials      19548      23253       +3705     

Flag	Coverage Δ
integration	36.7725% <78.1250%> (?)
unit	70.4264% <100.0000%> (-1.9008%)	⬇️

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

Components	Coverage Δ
dumpling	53.9957% <ø> (-2.3014%)	⬇️
parser	∅ <ø> (∅)
br	51.4852% <ø> (+5.1066%)	⬆️

[you06]

/retest

[tiprow]

@you06: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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 kubernetes/test-infra repository.

[you06]

The testing flag not work in CI...

[you06]

Ok it works.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cfzjywxk, ekexium

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-03-22 08:15:03.228048081 +0000 UTC m=+1623730.250294469: ☑️ agreed by ekexium.
• 2024-03-22 08:22:31.230617468 +0000 UTC m=+1624178.252863855: ☑️ agreed by cfzjywxk.

[ekexium]

/run-check-issue-triage-complete

[ti-chi-bot]

In response to a cherrypick label: failed to apply #51913 on top of branch "release-8.0":

failed to git commit: exit status 1