tests: Fix unstable test alter_pk (#8917)

[ti-chi-bot]

This is an automated cherry-pick of #8917

What problem does this PR solve?

Issue Number: close #8916

Problem Summary:

After executing alter table test.t add primary key new_pk(a,b,c), the table schema is not synced to the latest one when reading from tiflash. Because casting from nullable to not null can be automatically done in the DeltaMergeStore level. So sometime the integration test is not stable. Introduced by #7630

[2024-04-09T07:08:15.819Z] fullstack-test2/ddl/alter_pk.test: Running
[2024-04-09T07:08:24.856Z]   File: fullstack-test2/ddl/alter_pk.test
[2024-04-09T07:08:24.856Z]   Error line: 35
[2024-04-09T07:08:24.856Z]   Error: DBGInvoke query_mapped('desc \$d.\$t', test, t)
[2024-04-09T07:08:24.856Z]   Result:
[2024-04-09T07:08:24.856Z]     ┌─name────────┬─type────────────┬─default_type─┬─default_expression─┐
[2024-04-09T07:08:24.856Z]     │ a           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ b           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ c           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ d           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ e           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ f           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ _tidb_rowid │ Int64           │              │                    │
[2024-04-09T07:08:24.856Z]     └─────────────┴─────────────────┴──────────────┴────────────────────┘
[2024-04-09T07:08:24.856Z]   Expected:
[2024-04-09T07:08:24.856Z]     ┌─name────────┬─type────────────┬─default_type─┬─default_expression─┐
[2024-04-09T07:08:24.856Z]     │ a           │ Int32           │              │                    │
[2024-04-09T07:08:24.856Z]     │ b           │ Int32           │              │                    │
[2024-04-09T07:08:24.856Z]     │ c           │ Int32           │              │                    │
[2024-04-09T07:08:24.856Z]     │ d           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ e           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ f           │ Nullable(Int32) │              │                    │
[2024-04-09T07:08:24.856Z]     │ _tidb_rowid │ Int64           │              │                    │
[2024-04-09T07:08:24.856Z]     └─────────────┴─────────────────┴──────────────┴────────────────────┘

What is changed and how it works?

Add DBGInvoke __refresh_table_schema(test, t2); to sync the latest schema of table

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

[JaySon-Huang]

/run-all-tests

[JaySon-Huang]

/run-all-tests

[JaySon-Huang]

[2024-04-26T07:58:37.449Z] 
Stopping fullstack-test2_tiflash0_1 ... error
Stopping fullstack-test2_pd0_1      ... error
Stopping fullstack-test2_tikv0_1    ... error
Stopping fullstack-test2_tidb0_1    ... done
[2024-04-26T07:58:37.450Z] ERROR: for fullstack-test2_tiflash0_1  cannot stop container: d4b144958f9aa41dc8dc7a70a6b7e1035ab9fc9b8aece7ec42c849c0674aa389: tried to kill container, but did not receive an exit event
[2024-04-26T07:58:37.450Z] Removing fullstack-test2_tiflash0_1 ... 
[2024-04-26T07:58:37.450Z] Removing fullstack-test2_tidb0_1    ... 
[2024-04-26T07:58:37.703Z] 
Removing fullstack-test2_tidb0_1    ... done
Removing fullstack-test2_tiflash0_1 ... done
Removing network fullstack-test2_default
[2024-04-26T07:58:37.704Z] error while removing network: network fullstack-test2_default id f5747fe8274021cd809187be876661fc594f791d89fd8a6206eec12b4ca73c2d has active endpoints

/run-all-tests

[CalvinNeo]

lgtm

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CalvinNeo, JaySon-Huang

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-04-26 07:07:37.295018849 +0000 UTC m=+330414.034921762: ☑️ agreed by JaySon-Huang.
• 2024-04-28 07:00:36.348502323 +0000 UTC m=+167790.105637896: ☑️ agreed by CalvinNeo.

[JaySon-Huang]

/run-unit-test