[jira] [Created] (IGNITE-3428) TcpCommunicationSpi: potential message lost during reconnect

["Semen Boikov (JIRA)" <ji...@apache.org>]

Semen Boikov created IGNITE-3428:
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             Summary: TcpCommunicationSpi: potential message lost during reconnect
                 Key: IGNITE-3428
                 URL: https://issues.apache.org/jira/browse/IGNITE-3428
             Project: Ignite
          Issue Type: Bug
          Components: general
            Reporter: Semen Boikov
            Priority: Critical


Added test reproducing lost message during reconnect: IgniteCacheMessageRecoveryIdleConnection. 

It is possible that method 'send' finished, then connection closed, there are unacknowledged messages, but communication does not try to reconnect (if there are no others messages to be sent to this node).

Looks like there are at least 2 issues:
- 'onDisconnected' checks result of 'clients.remove(id, rmv)' to trigger reconnect. this is not saf (e.g. client is removed when session is closed on idle timeout)
- 'onDisconnected' checks that messagesFutures() collection is not empty, but 'onDisconnected' is erroneously called before all futures are polled from closing session (GridNioService.AbstractNioClientWorker.close)



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