Hi, In an older version there was an issue that caused this condition https://issues.apache.org/jira/browse/IGNITE-8987
Send a reproducer, mention the version you are using, along with Ignite logs(from both nodes) and a stack trace of both servers when this condition occurs. How to take thread dump: https://stackoverflow.com/questions/10756105/how-to-get-a-complete-stack-trace-of-a-running-java-program-that-is-taking-100 Also mention what java version you are using. Thanks, Alex -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/