Sergey Chugunov created IGNITE-8760:
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             Summary: TcpDiscoverySpi: validation of discovery message path on 
each node
                 Key: IGNITE-8760
                 URL: https://issues.apache.org/jira/browse/IGNITE-8760
             Project: Ignite
          Issue Type: Improvement
            Reporter: Sergey Chugunov


As each discovery message goes across the ring it can record all nodes it was 
handled on.

It gives discovery protocol an opportunity to set up a constant monitoring of 
cluster topology: each node on receiving discovery message will compare path 
recorded by the message and its local picture of current topology. On detecting 
any discrepancy node may at least print warning or take other actions.

Path recording may be expensive in terms of network traffic so it is better to 
add this logic to specific types of discovery messages: all topology changing 
messages and (may be) heartbeats.



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