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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2015/05/06 23:26:00 UTC

[jira] [Resolved] (OAK-2845) Memory leak in ObserverTracker#removedService

     [ https://issues.apache.org/jira/browse/OAK-2845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Dürig resolved OAK-2845.
--------------------------------
    Resolution: Fixed

Fixed at http://svn.apache.org/r1678096

> Memory leak in ObserverTracker#removedService
> ---------------------------------------------
>
>                 Key: OAK-2845
>                 URL: https://issues.apache.org/jira/browse/OAK-2845
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: core
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>             Fix For: 1.3.0
>
>
> {{ObserverTracker#removedService}} does not remove the unregistered service from the {{subscriptions}} it keeps internally. 
> This is troublesome as the {{ChangeProcessor}} instances are tracked by {{ObserverTracker}}. When unregistering an observation listener the associated {{ChangeProcessor}} is disabled but not removed and thus not made available for gc. This in turn makes {{ChangeProcessor}} keep a reference to an old node state ({{previousRoot}}), which will render revision garbage collection ineffective. 



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