executor: fix index_lookup_hash_join hang when used with limit (#35820)

[ti-srebot]

cherry-pick #35820 to release-5.0
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/36098

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git push [email protected]:ti-srebot/tidb.git pr/36098:release-5.0-87052dc2f864

---

Signed-off-by: guo-shaoge [email protected]

What problem does this PR solve?

Issue Number: close #35638

Problem Summary:
IndexLookupHashJoin hangs when used with limit.

innerWorker of IndexLookupHashJoin is still running when limitExec calls Close(). So no goroutine will read result, which makes the task.resultCh be full, and it's stucked when innerWorker try to push result.

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test: MySQL test: https://github.com/pingcap/tidb-test/pull/1887
• 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.

executor: fix index_lookup_hash_join hang when used with limit

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• AilinKid
• XuHuaiyu

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[ti-srebot]

/run-all-tests

[ti-srebot]

@guo-shaoge you're already a collaborator in bot's repo.

[guo-shaoge]

/run-all-tests

[guo-shaoge]

/merge

[ti-chi-bot]

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

Commit hash: b36794b

[guo-shaoge]

/run-unit-test

[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/b36794b5b32b480f68926e548991c82f8303ef94