mirror of
https://github.com/scylladb/scylladb.git
synced 2026-05-12 19:02:12 +00:00
8727634e9c
Currently, during group0 snapshot transfer, the node pulling the snapshot will send the `raft_pull_topology_snapshot` verb even if the cluster is not in topology-on-raft mode. The RPC handler returns an empty snapshot in that case. However, using the verb outside topology on raft causes problems: - It can cause issues during rolling upgrade as the snapshot transfer will keep failing on the upgraded nodes until the leader node is upgraded, - Topology changes on raft are still experimental, and using the RPC outside experimental mode will prevent us from doing breaking changes to it. Solve the issue by passing the "topology changes on raft enabled" flag to group0_state_machine and send the RPC only in topology on raft mode.