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https://issues.apache.org/jira/browse/FELIX-2332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12869447#action_12869447
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Jed Wesley-Smith commented on FELIX-2332:
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Any update?
The m_extensions_cache is still being written to with an blank cache during the
remove operation.
> Lots of contention on ExtensionManager.openConnection(URL)
> ----------------------------------------------------------
>
> Key: FELIX-2332
> URL: https://issues.apache.org/jira/browse/FELIX-2332
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: framework-2.0.5
> Reporter: Jed Wesley-Smith
> Assignee: Karl Pauls
> Fix For: framework-3.0.0
>
> Attachments: ExtensionManager.java.patch
>
>
> This method is synchronized, apparently to protect is the iteration through
> the m_extensions list. We have seen significant blocking in our applications
> as this lock encompasses the call to URL.openConnection as well.
> As this list is rarely changed, a copy-on-write structure would be more
> appropriate, but at the very least the, only holding the lock during the
> iteration would be far preferable.
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