In my test case:see the attachment.I can reproduce the bug
1.
testStartServer
2.
testMultiClient
3.
close testMultiClient
4.
then testStartServer will Failed to wait for partition map exchang
I need update cache in DiscoveryEvent. how to fix this?
About question 2, debug level like this：
I start a node，then b,c,d,e,f nodes in mulitithread. then close them all.
in the debugs log, A server latch created with participantsSize=5 but only
one countdown .then latch will be hang.
simple logs is:
>>> ++
> >>> Topology snapshot.
>
