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Posted to issues@nifi.apache.org by "Endre Kovacs (JIRA)" <ji...@apache.org> on 2019/02/14 16:39:00 UTC

[jira] [Created] (NIFI-6031) ListenTCP processor does not release connections if client disconnects abruptly

Endre Kovacs created NIFI-6031:
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             Summary: ListenTCP processor does not release connections if client disconnects abruptly
                 Key: NIFI-6031
                 URL: https://issues.apache.org/jira/browse/NIFI-6031
             Project: Apache NiFi
          Issue Type: Bug
          Components: Core Framework
    Affects Versions: 1.5.0
            Reporter: Endre Kovacs
            Assignee: Endre Kovacs


If a client connected to ListenTCP processor, gets disconnected abruptly: 
(eg.: they disconnected their VPN to NiFi's network), the client-TCP-socket on the NiFi node will be seen lingering for an extended amount of time (eg.: such socket can linger in established state even after 12 hours after disconnection)

Or till a manual workaround is done: the ListenTCP processor is restarted.

An ideal fix would be to allow the underlying OS to poll the socket if the remote side is still alive, and disconnect it if not.



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