Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Deploy a cluster with gc safepoint v2 enabled. The gc safepoint for each keyspace is not the same. So the last_gc_safepoint is not correct under multi tenant

2. What did you expect to see? (Required)

3. What did you see instead (Required)

4. What is your TiFlash version? (Required)

master