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https://issues.apache.org/jira/browse/FELIX-1658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771406#action_12771406
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Felix Meschberger commented on FELIX-1658:
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In Rev. 830913 converted the dynamic import of the LogService package into a
static but optional import. This shold prevent another potential deadlock which
may be caused by the dynamic import package resolution code requiring the
global lock in the Felix Framework.
> Deadlocks caused by component activation and deactivation
> ---------------------------------------------------------
>
> Key: FELIX-1658
> URL: https://issues.apache.org/jira/browse/FELIX-1658
> Project: Felix
> Issue Type: Bug
> Components: Declarative Services (SCR)
> Affects Versions: scr-1.2.0
> Reporter: Felix Meschberger
> Assignee: Felix Meschberger
> Fix For: scr-1.2.0
>
>
> Deadlock issues with SCR: Component operations are synchronized and may run
> while the bundle lock is held. This may cause deadlocks with the framework
> (mostly between the PackageAdmin thread and the SCR Component Actor thread).
> The problem is that many operations of SCR are called in a bundle listener
> and cause further operations (while holding Java locks (synchronized)) inside
> the framework.
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