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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NIFI-241) Framework FingerprintFactory begins processor life cycle but does not finish
Date Tue, 13 Jan 2015 18:36:34 GMT

    [ https://issues.apache.org/jira/browse/NIFI-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14275675#comment-14275675
] 

ASF subversion and git services commented on NIFI-241:
------------------------------------------------------

Commit 21e809a7cbb85f450749916e474dec93f0d023d6 in incubator-nifi's branch refs/heads/develop
from [~markap14]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-nifi.git;h=21e809a ]

NIFI-241: Only call Processor methods with @OnAdded annotation when a Processor is actually
added to graph instead of also calling on NiFi restart


> 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
>
>         Attachments: 0001-NIFI-241-Only-call-Processor-methods-with-OnAdded-an.patch
>
>
> 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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