hello:
my replication is pss.but just only one slave hang .

MongoDB shell version v4.4.12
connecting to: mongodb://127.0.0.1:31004/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session

{ "id" : UUID("f59fd32f-30cc-42db-b8e4-393c1a8384ed") }

MongoDB server version: 4.4.12

shard4:SECONDARY> rs.printSlaveReplicationInfo()
WARNING: printSlaveReplicationInfo is deprecated and may be removed in the next major release. Please use printSecondaryReplicationInfo instead.
source: mongotest11.prd.db:31004
syncedTo: Fri Jul 08 2022 09:38:12 GMT+0800 (CST)
2 secs (0 hrs) behind the primary
source: mongotest13.prd.db:31004
syncedTo: Fri Jul 08 2022 09:08:31 GMT+0800 (CST)
1783 secs (0.5 hrs) behind the primary
shard4:SECONDARY> show dbs;

i execute show dbs, it is hang.

i collect pstack for mongodb.
pstack 89347 >/tmp/89347.log