[Feature] Support Cluster Snapshot Backup: checkpoint and image backup (part3) (backport #54695) #54982
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What I'm doing:
This is part3 for supporting cluster snapshot backport for share data mode.
In this pr, we introduce a new checkpoint scheduler to finish the image backup:
ClusterSnapshotCheckpointScheduler
to control the creation of the imgaefor FE and StarMgr in the same thread with consistent journal ids between two image.
ClusterSnapshotCheckpointController
should be exclusive with the normal checkpoint.Fixes #53867
#53867
What type of PR is this:
Does this PR entail a change in behavior?
If yes, please specify the type of change:
Checklist: