[Feature Request] Reuse snapshot

[knightast]

Is your feature request related to a problem? Please describe.
Construct a snapshot cost a lot of time, some olap workloads can share a snapshot to save time.

Describe the solution you'd like
Reserve a snapshot in the background, and can be managed by a set of interfaces.

Describe alternatives you've considered
Maybe immutable materialized view.

Additional context
Nope.