scylladb

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Alex d00443f4b0 service_levels: mark v2 migration complete on empty legacy table

During raft-topology upgrade in 2026.1, service_level_controller::migrate_to_v2()
returns early when system_distributed.service_levels is empty.
This skips the service_level_version = 2 write, so the cluster is never marked
as upgraded to service levels v2 even though there is no data to migrate.
Subsequent upgrades may then fail the startup check which requires
service_level_version == 2.
Remove the early return and let the migration commit the version marker even
when there are no legacy service levels rows to copy.

Fixes: https://scylladb.atlassian.net/browse/SCYLLADB-1198

backport: only needed in 2026.1 because its the critical upgrade before 2026.2,3,4

2026-04-05 18:00:12 +03:00

qos_common.cc

tree: migrate from boost::adaptors::transformed to std::views::transform

2025-01-17 16:56:40 +02:00

qos_common.hh

service: do not include unused headers

2025-03-20 11:18:16 +08:00

qos_configuration_change_subscriber.hh

qos: manage and assign scheduling groups to service levels

2025-01-02 07:13:34 +01:00

raft_service_level_distributed_data_accessor.cc

service_level_controller: methods to create driver service level