[jira] Reopened: (FELIX-2332) Lots of contention on ExtensionManager.openConnection(URL)

["Jed Wesley-Smith (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-2332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jed Wesley-Smith reopened FELIX-2332:
-------------------------------------


> 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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