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https://issues.apache.org/jira/browse/NIFI-2927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15684473#comment-15684473
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ASF subversion and git services commented on NIFI-2927:
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Commit eb5abf809d04ca44f8c426dbfd5ade545688c892 in nifi's branch
refs/heads/master from [~mattyb149]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=eb5abf8 ]
NIFI-2927: Added Validation Query to HiveConnectionPool
This closes #1252.
Signed-off-by: Bryan Bende <[email protected]>
> 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
> Assignee: 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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