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http://jira.codehaus.org/browse/MNG-3320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_125557
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Jason van Zyl commented on MNG-3320:
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This is for the embedder that was in 2.0.x which is no more. I don't run into
problems with the new embedder. But if you have a test case, or can describe
what caused the failure reopen the issue for the 2.1.x embedder. The 2.0.x
version is defunct.
> Avoid perm gen space out of memory errors
> -----------------------------------------
>
> Key: MNG-3320
> URL: http://jira.codehaus.org/browse/MNG-3320
> Project: Maven 2
> Issue Type: Wish
> Components: Embedding
> Affects Versions: 2.0.5
> Reporter: Cédric Munger
> Assignee: Milos Kleint
> Priority: Minor
> Fix For: 2.1-alpha-1
>
> Attachments: mavenEmbedder.txt
>
>
> Each maven embedder instance is using his own classworld, the problem is that
> the creation of multiple maven embedder instances can lead to perm gen space
> errors, since each embedder classworld is filling the perm gen space memory
> area with new classes, out of memory errors can occurs quite easily. For
> some unknown reasons, this memory is never garbaged collected (at least on an
> MacOSX 1.5.0 JVM). A Shared classworld between all embedder object instances
> could avoid this potential problem. A modification of the 2.1 embedder API to
> choose between these 2 modes (own classworld or shared) could be a good thing.
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