cassandra: Add 'allow_overwrite' option, to allow updating objects
as part of a migration.
Also write a first test that simulates how a simple migration would go.
This is the easy part of #2602 (closed).
Migrated from D5582 (view on Phabricator)
Staging instance, all changes can be removed at any time
as part of a migration.
Also write a first test that simulates how a simple migration would go.
This is the easy part of #2602 (closed).
Migrated from D5582 (view on Phabricator)