This PR fix: 2 Backends. Create tables with colocation group, 1 replica. Decommission one of Backends. The tablet on decommissioned Backend is not reduced. This is a bug of ColocateTableCheckerAndBalancer.
This PR fix: 2 Backends. Create tables with colocation group, 1 replica. Decommission one of Backends. The tablet on decommissioned Backend is not reduced. This is a bug of ColocateTableCheckerAndBalancer.