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From "Michael Moser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NIFI-241) Framework FingerprintFactory begins processor life cycle but does not finish
Date Tue, 13 Jan 2015 16:29:35 GMT

    [ https://issues.apache.org/jira/browse/NIFI-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14275490#comment-14275490
] 

Michael Moser commented on NIFI-241:
------------------------------------

@OnAdded is definitely called on a restart of NiFi, currently.  If that is changed, like you
suggested, then I think the problem is solved.

> Framework FingerprintFactory begins processor life cycle but does not finish
> ----------------------------------------------------------------------------
>
>                 Key: NIFI-241
>                 URL: https://issues.apache.org/jira/browse/NIFI-241
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>            Reporter: Michael Moser
>            Assignee: Mark Payne
>             Fix For: 0.0.1
>
>
> The FingerprintFactory will create Processor objects and invoke their initialize() and
@OnAdded methods.  If a Processor uses system resources, these methods are where those resources
are allocated.  But, those processors are never disposed by calling their @OnRemoved or @OnShutdown
methods.  This may result in system resource leaks, depending on how processors are implemented.
> To reproduce, add a processor to the NiFi graph and restart NiFi.  Note that initialize()
and @OnAdded is called at least twice (I observed 3 times) as NiFi starts.  The getIdentifier()
is different for each invocation.  Shutdown NiFi and observe that @OnShutdown is called once.



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