[jira] [Commented] (CONFIGURATION-572) Possible memory leak when using CombinedConfiguration

["Oliver Heger (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CONFIGURATION-572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13957920#comment-13957920 ] 

Oliver Heger commented on CONFIGURATION-572:
--------------------------------------------

Thank you very much for this report.

Currently, there is a major refactoring ongoing which will eventually lead to version 2.0. In this progress, your proposed change can be applied.

> Possible memory leak when using CombinedConfiguration
> -----------------------------------------------------
>
>                 Key: CONFIGURATION-572
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-572
>             Project: Commons Configuration
>          Issue Type: Bug
>            Reporter: Rob Walker
>            Priority: Minor
>         Attachments: 2960.patch
>
>
> We altered our code to use CombinedConfiguration in a more dynamic way and immediately started to see large memory usage. Looking for a potential leak, we realised we were missing a clear() when the config objects were done with.
> Even with this call in, the leak persisted. It seems that whilst the clear() method cleans up the object, it doesn't clear the listener list as well. This leaves around stale references which then never become GC.
> Will attach the patch we found worked at curing this



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