execution: commit the transaction before responding explain analyze results to the client (#38044)

[ti-srebot]

cherry-pick #38044 to release-5.4 You can switch your code base to this Pull Request by using git-extras:

# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/38060

After apply modifications, you can push your change to this PR via:

git push [email protected]:ti-srebot/tidb.git pr/38060:release-5.4-b0e073478ffe

---

What problem does this PR solve?

Issue Number: close #37373

Problem Summary: The explain analyze statement execution with DML executors may respond to the client before the transaction commit finishing.

What is changed and how it works?

Trigger the commit operation if the statement is an explain analyze statement with DML executors before returning the record set of itself.

Check List

Tests

• [x] Unit test
• [ ] Integration test
• [x] Manual test (add detailed scripts or steps below)
  • Sleep before the commit
  • Execute explain analyze
  • Check if it responses before the commit has finished
• [ ] No code

Side effects

Documentation

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

Fix the issue explain analyze with DML executors may respond to the client before the transaction commit has finished.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• ekexium
• zyguan

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment. After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[ti-srebot]

/run-all-tests

[MyonKeminta]

There are still some conflicts.

[cfzjywxk]

@MyonKeminta Conflicts are resolved, PTAL

[cfzjywxk]

/merge

[ti-chi-bot]

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

Commit hash: e8464e21f73087a396bcfe5081008d70a16b0832

[zyguan]

@MyonKeminta Conflicts are resolved, PTAL

We have to use the old version of testkit.

[zyguan]

/merge

[ti-chi-bot]

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

Commit hash: 3674411ad0b35474cfa79d2bab47114a56978c42

[hawkingrei]

@cfzjywxk PTAL

[2022-09-23T09:44:19.618Z] planner/core/integration_test.go:19: File is not `goimports`-ed (goimports)

[2022-09-23T09:44:19.618Z] 	"fmt"

[cfzjywxk]

/merge

[ti-chi-bot]

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

Commit hash: f10a1f54ef5e2f39f1b2b6afa62b171cae169fc7

[cfzjywxk]

/merge

[cfzjywxk]

/run-unit-test