Aggregates with $search appear to hold their storage tickets while waiting for a response from the network. This can block other queries from proceeding/hang them while we wait for a response from the network.  There might be some reason it is not possible to drop/re-acquire those tickets while waiting for the network, but after talking to charlie.swanson@mongodb.com , we couldn't think of one. It feels like a bug to hold a contended resource like this while waiting for the network, so I figured I'd file a ticket to make sure.