ddl notifier: use pagination for SELECT to reduce memory usage (#58376)

[ti-chi-bot]

This is an automated cherry-pick of #58376

What problem does this PR solve?

Issue Number: close #58368

Problem Summary:

What changed and how does it work?

as title. refine the Store.List.

// Store is the (de)serialization and persistent layer.
type Store interface {
...
	// List will start a transaction of given session and read all schema changes
	// through a ListResult. The ownership of session is occupied Store until CloseFn
	// is called.
	List(ctx context.Context, se *sess.Session) ListResult
}

// ListResult is the result stream of a List operation.
type ListResult interface {
	// Read tries to decode at most `len(changes)` SchemaChange into given slices. It
	// returns the number of schemaChanges decoded, 0 means no more schemaChanges.
	//
	// Note that the previous SchemaChange in the slice will be overwritten when call
	// Read.
	Read(changes []*SchemaChange) (int, error)
}

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

Attention: Patch coverage is 87.71930% with 14 lines in your changes missing coverage. Please review.

Please upload report for BASE (release-8.5@11ca251). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.5     #58488   +/-   ##
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  Coverage               ?   56.9132%           
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  Files                  ?       1770           
  Lines                  ?     626921           
  Branches               ?          0           
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  Hits                   ?     356801           
  Misses                 ?     245971           
  Partials               ?      24149           

Flag	Coverage Δ
integration	36.8370% <77.1929%> (?)
unit	72.5968% <87.7193%> (?)

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

Components	Coverage Δ
dumpling	52.8711% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	52.2539% <0.0000%> (?)