chesnokoff commented on code in PR #12301:
URL: https://github.com/apache/ignite/pull/12301#discussion_r2358036832


##########
modules/core/src/main/java/org/apache/ignite/spi/discovery/tcp/ServerImpl.java:
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@@ -1703,10 +1704,24 @@ private boolean notifyDiscovery(int type, long topVer, 
TcpDiscoveryNode node, Sp
 
             NavigableMap<Long, Collection<ClusterNode>> hist = 
updateTopologyHistory(topVer, top);
 
-            lsnr.onDiscovery(
+            IgniteFuture<?> fut = lsnr.onDiscovery(

Review Comment:
   I have not implemented test for this because I think usually there will no 
be race condition with `discovery().allNodes()`. It can be reproduced only for 
high load systems. For instance when five nodes are trying to connect to slow 
master at the same time. I think usually TCP communication will save us from 
the race



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