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https://issues.apache.org/jira/browse/KARAF-5811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16553904#comment-16553904
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Guillaume Nodet commented on KARAF-5811:
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The {{installFeatures}} should not be called while holding the framework lock.
The {{org.apache.karaf.deployer.features.osgi.Activator.doStart}} method should
start a thread to call the {{FeatureDeploymentListener.init}} method in order
to not hold the lock.
> Deadlock when Restarting Karaf
> ------------------------------
>
> Key: KARAF-5811
> URL: https://issues.apache.org/jira/browse/KARAF-5811
> Project: Karaf
> Issue Type: Bug
> Affects Versions: 4.1.5
> Reporter: Cetra Free
> Assignee: Jean-Baptiste Onofré
> Priority: Critical
> Attachments: jstack.log, karaf.log
>
>
> When restarting Karaf with features.xml & kar files in the deploy directory,
> occasionally when rebooting it gets stuck, and the ssh console is
> inaccessible.
> This doesn't appear to happen on first boot, only when restarting with
> deployed kar archives/features. It is also intermittent, and doesn't happen
> all the time.
> I've attached the log output and a jstack dump of when this happens.
> The workaround is to kill off the wrapper & java instance, and restart the
> service.
>
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