I also found two stack overflow comments suggesting they saw it after upgrading to 2.8.1:
https://stackoverflow.com/questions/62258394/i-would-like-to-know-the-cause-for-this-error-org-apache-ignite-spi-ignitespiex#comment111425289_62258394 https://stackoverflow.com/questions/62258394/i-would-like-to-know-the-cause-for-this-error-org-apache-ignite-spi-ignitespiex#comment110110653_62258882 In our case our cluster was up and running for months and then we encountered this problem and can't resolve it. Nothing changed in the network topology or server configuration. -- Sent from: http://apache-ignite-users.70518.x6.nabble.com/
