executor: reset all state when table reader executor close (#33219)

[ti-srebot]

cherry-pick #33219 to release-6.0
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# In tidb repo:
git pr https://github.com/pingcap/tidb/pull/33229

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git push [email protected]:ti-srebot/tidb.git pr/33229:release-6.0-64b057dea2e9

---

What problem does this PR solve?

Issue Number: close #33214

Problem Summary:

What is changed and how it works?

When there is a Apply executor, it may Open/Close its children executor several times.

mysql> explain select col from t t1 where (select count(*) from t t2 where t2.col = t1.col or t2.col =  'sdf') > 1;
+------------------------------------+---------+-----------+---------------+-------------------------------------------------------+
| id                                 | estRows | task      | access object | operator info                                         |
+------------------------------------+---------+-----------+---------------+-------------------------------------------------------+
| Projection_13                      | 5.00    | root      |               | test.t.col                                            |
| └─Apply_15                         | 5.00    | root      |               | CARTESIAN inner join                                  |
|   ├─UnionScan_16(Build)            | 5.00    | root      |               |                                                       |
|   │ └─TableReader_18               | 5.00    | root      |               | data:TableFullScan_17                                 |
|   │   └─TableFullScan_17           | 5.00    | cop[tikv] | table:t1      | keep order:false, stats:pseudo                        |
|   └─Selection_19(Probe)            | 0.80    | root      |               | gt(Column#5, 1)                                       |
|     └─StreamAgg_21                 | 1.00    | root      |               | funcs:count(1)->Column#5                              |
|       └─UnionScan_22               | 0.01    | root      |               | or(eq(test.t.col, test.t.col), eq(test.t.col, "sdf")) |
|         └─TableReader_25           | 0.01    | root      |               | data:Selection_24                                     |
|           └─Selection_24           | 0.01    | cop[tikv] |               | or(eq(test.t.col, test.t.col), eq(test.t.col, "sdf")) |
|             └─TableFullScan_23     | 5.00    | cop[tikv] | table:t2      | keep order:false, stats:pseudo                        |
+------------------------------------+---------+-----------+---------------+-------------------------------------------------------+
11 rows in set (0.00 sec)

So it's important that after Open/Close, the executor can be reused.
However, the table reader doen't reset its keyRange and when UnionScan Open/Close it will get repeated keyRange.
And finally return wrong result to its parent executor.

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

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• ichn-hu
• lcwangchao

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[ti-srebot]

/run-all-tests

[ti-srebot]

@tiancaiamao you're already a collaborator in bot's repo.

[tiancaiamao]

/run-mysql-test

[purelind]

/run-check_dev
/run-unit-test

[sre-bot]

Code Coverage Details: https://codecov.io/github/pingcap/tidb/commit/fc6454e19906edb88d1f32908427c14b4487613a

[xhebox]

closed for DMR version