scheduling service recover more than 5mins when inject scheduling primary network partition

[Lily2025]

Enhancement

What did you do?

1、run workload
2、inject network partition between scheduling primary and all other pods

What did you expect to see?

scheduling service can recover less than 5mins when inject scheduling primary network partition

What did you see instead?

scheduling service recover more than 5mins when inject scheduling primary network partition

What version of PD are you using (pd-server -V)?

./pd-server -V
Release Version: v8.0.0-alpha
Edition: Community
Git Commit Hash: e199866
Git Branch: heads/refs/tags/v8.0.0-alpha
UTC Build Time: 2024-02-26 11:38:17
2024-02-28T11:55:27.776+0800

[Lily2025]

/assign rleungx

[rleungx]

It relies on hibernate region tick interval because currently, the switch of scheduling primary won't awake all regions. So the prepare checker cannot receive all regions' heartbeat in time.