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From "Mark Thomas (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (POOL-122) java.util.Timer in EvictionTimer does not recover from OutOfMemoryError in Evictor
Date Wed, 01 Apr 2009 16:48:12 GMT

     [ https://issues.apache.org/jira/browse/POOL-122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mark Thomas resolved POOL-122.
------------------------------

    Resolution: Fixed

Scope reduced as requested. I'm getting close to pulling the whole patch and marking this
as WONTFIX as it is, in my view, a generally pointless exercise.

> java.util.Timer in EvictionTimer does not recover from OutOfMemoryError in Evictor
> ----------------------------------------------------------------------------------
>
>                 Key: POOL-122
>                 URL: https://issues.apache.org/jira/browse/POOL-122
>             Project: Commons Pool
>          Issue Type: Bug
>    Affects Versions: 1.3, 1.4
>         Environment: any
>            Reporter: Marcus Schulte
>             Fix For: 1.5
>
>         Attachments: fixes_POOL-122.patch
>
>
> GenericKeyedObjectPool.Evictor.run() catches and ignores Exceptions, but not Errors,
like OOME. Consequently, when, due to load-peeks an OOME is thrown in the evictor's timer-thread
it dies miserably and no eviction will happen again in any of the pools loaded within the
same class-loader (because the eviction timer is a static member). Also, the creation of evicting
pools will fail with IllegalStateException.
> Possible fixes:
>    1. catch Throwable in GenericKeyedObjectPool.Evictor.run()
>    2. check and eventually re-instantiate the Eviction-Timer.

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