[Bug] Tablet scheduler stop working

[morningman]

Search before asking

• I had searched in the issues and found no similar issues.

Version

trunk 61c9d11

What's Wrong?

Tablet scheduler stop working. Result in tablet not being repaired.

What You Expected?

Working well

How to Reproduce?

This is a bug introduced from #6513.

The working slot is not released when choosing source replica to do clone task

Anything Else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct