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Posted to issues@nifi.apache.org by "Matt Burgess (JIRA)" <ji...@apache.org> on 2016/10/20 20:11:58 UTC

[jira] [Created] (NIFI-2927) HiveConnectionPool - Invalid connections are returned

Matt Burgess created NIFI-2927:
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             Summary: HiveConnectionPool - Invalid connections are returned
                 Key: NIFI-2927
                 URL: https://issues.apache.org/jira/browse/NIFI-2927
             Project: Apache NiFi
          Issue Type: Bug
          Components: Extensions
            Reporter: Matt Burgess


The connections in the HiveConnectionPool controller service become invalid for several reasons : session timeout, firewalls block idle connections, outages of backend server, etc.
In the current NiFi release, these connections rest in the pool as good but when the user uses one of them, a SocketException: Socket closed error is encountered.

Proposed solution is to implement the same fix as in NIFI-2381, the aim is to "pretend periodically to test all the connections, drop the invalid ones, create new ones and maintain all the pool healthy."




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