execution: fix cte dead lock when used with IndexLookupJoin (#27465)

[ti-srebot]

cherry-pick #27465 to release-5.1
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git pr https://github.com/pingcap/tidb/pull/27536

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---

Signed-off-by: guo-shaoge shaoge1994@163.com

What problem does this PR solve?

Issue Number: close #27410

Problem Summary:

1. IndexLookupJoin Opens, and outer worker starts to use cte1.resTbl and cte2.resTbl
2. execStmtResult.Close() is called directly without querying any result(e.g. IndexLookupJoin.Next() is never called)
3. We reset cte1's resTbl and then reset cte2's resTbl, but the outer worker of IndexLookupJoin already hold cte2's resTbl and is waiting for cte1's resTbl.

Following is the log of execStmtResult.Close() and CTEExec.Next(), which prove above:

!!!!CTEExec.Next() &{{0 0} 1 [0xc004ae5ce0 0xc004ae5e00] 1024 0xc0059ba7e0 false 0 0xc004f27100}
!!!!! resetCTEStorageMap  &{{0 0} 1 [0xc004ae5860 0xc004ae58c0] 1024 0xc0059ba720 false 0 0xc004f26e00}
!!!!! resetCTEStorageMap  &{{1 0} 1 [0xc004ae5ce0 0xc004ae5e00] 1024 0xc0059ba7e0 false 0 0xc004f27100}
!!!!CTEExec.Next() &{{0 0} 1 [0xc004ae5860 0xc004ae58c0] 1024 0xc0059ba720 false 0 0xc004f26e00}

What is changed and how it works?

How it Works: Should wait for all workers to finish then we can reset cte.resTbl.

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

execution: fix cte dead lock when used with IndexLookupJoin

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• AilinKid
• wjhuang2016

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[ti-srebot]

/run-all-tests

[ti-srebot]

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

[AilinKid]

/merge

[ti-chi-bot]

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

Commit hash: 02a5f4a

[zhouqiang-cl]

/merge

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