Package leasemanager provides functionality for acquiring and managing leases via the kv api for use during sqlmigrations.

ExpectedDescriptorIDs returns the list of all expected system descriptor IDs, including those added by completed migrations.

NewManager initializes and returns a new Manager object.

SettingsDefaultOverrides documents the effect of several migrations that add an explicit value for a setting, effectively changing the "default value" from what was defined in code.

Manager encapsulates the necessary functionality for handling migrations of data in the cluster.

MigrationManagerTestingKnobs contains testing knobs.