Hi, Is it possible that firewall configured to block DDoS breaks connection to client node? Because I see here two possible cases: 1) STW pause on client, but we should see connection timeout exception; 2) Firewall rejects connections with a large traffic, and now you're getting connection refused.
BTW, forcible node drop in TcpCommunicationSpi was disabled by default in 2.3, but there is a high probability that persistence of 2.1 and 2.3 is not compatible, so you may get problems during migration. Thanks! -Dmitry -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
