BR: support restore compacted logs with checkpoint

[3pointer]

What problem does this PR solve?

Issue Number: close #57535

Problem Summary:

To support checkpoint and make switch-mode more robust.

What changed and how does it work?

This PR add a checkpoint logic for restore compacted logs and improve the code of switch mode.

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

[ti-chi-bot]

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[ti-chi-bot]

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Tests

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