Hi,
Seems like a STW/full GC happens on your nodes for quite a long time or some
network issues are there, please try to set failureDetectionTimeout property
in IgniteConfiguration to some and
<category name="org.apache.ignite.spi.communication.tcp">
<level value="DEBUG"/>
</category>
in logger and see if this is reproduced.
Also having you see "Received incoming connection when already connected to
this node, rejecting" in logs, try adding usePairedConnections to true in
TcpCommunicationSpi.
Can you also attach log from the node that is failing to connect?
Best regards.
Anton
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