Description
The problem we saw was that deleting a shard did not actually delete it, although it semi-claimed to have done so.
... o.a.s.c.OverseerCollectionProcessor [OverseerCollectionProcessor.java:723] Delete shard invoked ... o.a.s.c.OverseerCollectionProcessor [OverseerCollectionProcessor.java:781] Successfully deleted collection collection1, shard: null ...