Hi, Looks like logs from the server is still not full. If you've checked them and you sure that you don't have any exceptions in it before witnessing this problem, then, I think that you could have some connection problems or a long GC pause. Do you have any network monitoring? Also, I would recommend checking GC logs at this moment(or share it with community) on all nodes.
Also, Why did you set "queryThreadPoolSize" value="32" while you have only 24 CPUs for all 5 hosts? It's definitely will reduce performance due to a lot of context-switching. If everything okay with GC logs, it's possible to check TCP dumps, just to understand where the connection breaks off. Evgenii -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
