importintotest: fail fast to avoid data race

[lance6716]

What problem does this PR solve?

Issue Number: close #45655

Problem Summary:

If we meet

    job_test.go:295: 
        	Error Trace:	tests/realtikvtest/importintotest/job_test.go:295
        	Error:      	Condition never satisfied
        	Test:       	TestLoadRemote/TestShowDetachedJob

we don't continue the test, because the slow closure may race with following test logic on s.tk

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

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 @lance6716. 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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[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #45657 (2865530) into master (ac0c90e) will increase coverage by 0.4574%.
Report is 12 commits behind head on master.
The diff coverage is 0.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #45657        +/-   ##
================================================
+ Coverage   73.2228%   73.6802%   +0.4574%     
================================================
  Files          1273       1276         +3     
  Lines        390068     394951      +4883     
================================================
+ Hits         285619     291001      +5382     
+ Misses        86148      85748       -400     
+ Partials      18301      18202        -99     

Flag	Coverage Δ
integration	78.1388% <ø> (?)
unit	73.6726% <0.0000%> (+0.4497%)	⬆️

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

Components	Coverage Δ
dumpling	54.0444% <ø> (ø)
parser	85.0417% <ø> (-0.0109%)	⬇️
br	52.8608% <0.0000%> (+0.7109%)	⬆️

[lance6716]

/check-issue-triage-complete

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hawkingrei, xhebox

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• OWNERS [hawkingrei,xhebox]

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-07-28 08:46:38.005498278 +0000 UTC m=+516940.600029251: ☑️ agreed by hawkingrei.
• 2023-07-29 03:43:40.517754636 +0000 UTC m=+585163.112285621: ☑️ agreed by xhebox.

[lance6716]

/retest