executor: fix race when collecting telemetry info of batch copr

[you06]

Signed-off-by: you06 [email protected]

What problem does this PR solve?

Issue Number: close #41412

Problem Summary:

What is changed and how it works?

The build function may be called concurrently when building executors on probe side, use an atomic variable to avoid data race

» go test -race ./executor/issuetest -run TestIssueRaceWhenBuildingExecutorConcurrently --tags=intest
ok      github.com/pingcap/tidb/executor/issuetest      15.110s

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.

Fix the data race of store batch coprocessor telemetry stats.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• cfzjywxk
• tangenta

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[tangenta]

/check-issue-triage-complete

[hawkingrei]

/merge

[ti-chi-bot]

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

Commit hash: 94aed09