We need to test the following procedure:

PSS architecture

(1) Take one secondary out

(2) Start it as a standalone, set parameter disableLogicalSessionCacheRefresh to true

(3) Drop config.system.sessions and config.transactions

(4) Create a new config.system.session collection with the same UUID using applyOps

(5) Re-add the node to the replica set 

(6) Trigger a delete of a session that doesn't exist on the modified secondary but does on the primary

(7) Trigger an update of a session that doesn't exist on the modified secondary but does on the primary

(8) Trigger an insert of a session 

(9) Confirm that after some time both the session table and the transactions table will be consistent with the primary. This time should theoretically be localLogicalSessionTimeoutMinutes