Why our PostgreSQL replicas couldn't remove WAL files?

Cloning and replication slots postgresql drop replication slot Don't drop the group slot Although usually inactive, it's still vital to the proper operation of the EDB Postgres Distributed cluster If you drop it, then postgresql replication slot You can list all available replication slots and their details using the pg_replication_slots view SELECT * FROM pg_replication_slots;

postgresql drop replication slot The function underlying pg_replication_slots reads the replication slot on-disk structures directly, meaning the contents of this view are always visible