domain: do not reset the data for infoschema v2 when full load

[tiancaiamao]

What problem does this PR solve?

Issue Number: close #53442

Problem Summary:

What changed and how does it work?

The bug is caused by the clearing data operation.

The historial version is missing after clear, so tryDiffLoad get schema ID not exist error and then full reload.

Here is the stack:

[errorVerbose="[schema:1049]Unknown database '(Schema ID 100)'
github.com/pingcap/errors.AddStack
	/home/genius/go/pkg/mod/github.com/pingcap/[email protected]/errors.go:178
github.com/pingcap/errors.(*Error).GenWithStackByArgs
	/home/genius/go/pkg/mod/github.com/pingcap/[email protected]/normalize.go:175
github.com/pingcap/tidb/pkg/infoschema.(*Builder).applyTableUpdateV2
	/home/genius/project/src/github.com/pingcap/tidb/pkg/infoschema/infoschema_v2.go:815
github.com/pingcap/tidb/pkg/infoschema.applyTableUpdate
	/home/genius/project/src/github.com/pingcap/tidb/pkg/infoschema/infoschema_v2.go:714
github.com/pingcap/tidb/pkg/infoschema.applyDefaultAction
	/home/genius/project/src/github.com/pingcap/tidb/pkg/infoschema/builder.go:315
github.com/pingcap/tidb/pkg/infoschema.(*Builder).ApplyDiff
	/home/genius/project/src/github.com/pingcap/tidb/pkg/infoschema/builder.go:102
github.com/pingcap/tidb/pkg/domain.(*Domain).tryLoadSchemaDiffs
	/home/genius/project/src/github.com/pingcap/tidb/pkg/domain/domain.go:478
github.com/pingcap/tidb/pkg/domain.(*Domain).loadInfoSchema
	/home/genius/project/src/github.com/pingcap/tidb/pkg/domain/domain.go:283
github.com/pingcap/tidb/pkg/domain.(*Domain).Reload
	/home/genius/project/src/github.com/pingcap/tidb/pkg/domain/domain.go:613
github.com/pingcap/tidb/pkg/domain.(*Domain).loadSchemaInLoop
	/home/genius/project/src/github.com/pingcap/tidb/pkg/domain/domain.go:926
github.com/pingcap/tidb/pkg/domain.(*Domain).Init.func2
	/home/genius/project/src/github.com/pingcap/tidb/pkg/domain/domain.go:1294
github.com/pingcap/tidb/pkg/util.(*WaitGroupEnhancedWrapper).Run.func1
	/home/genius/project/src/github.com/pingcap/tidb/pkg/util/wait_group_wrapper.go:99
runtime.goexit
	/home/genius/project/go/src/runtime/asm_amd64.s:1650"]

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

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.

None

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.5878%. Comparing base (9745a16) to head (91802d5).
Report is 6 commits behind head on master.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #53543        +/-   ##
================================================
+ Coverage   72.5287%   74.5878%   +2.0591%     
================================================
  Files          1506       1507         +1     
  Lines        430930     431928       +998     
================================================
+ Hits         312548     322166      +9618     
+ Misses        99026      89846      -9180     
- Partials      19356      19916       +560     

Flag	Coverage Δ
integration	49.2124% <100.0000%> (?)
unit	71.4454% <100.0000%> (-0.0690%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9957% <ø> (ø)
parser	∅ <ø> (∅)
br	50.3015% <ø> (+8.4807%)	⬆️

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wjhuang2016, ywqzzy

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Needs approval from an approver in each of these files:

• OWNERS [wjhuang2016,ywqzzy]
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-05-30 13:01:43.453571742 +0000 UTC m=+2954257.210707313: ☑️ agreed by wjhuang2016.
• 2024-05-31 09:46:21.663305757 +0000 UTC m=+3028935.420441329: ☑️ agreed by ywqzzy.