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https://issues.apache.org/jira/browse/KARAF-3798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14594026#comment-14594026
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Fabian Lange commented on KARAF-3798:
-------------------------------------
Ok, i have narrowed it down. My bootFeature was installing further features
simultaneously.
it seems that org.apache.karaf.features.internal.service.FeaturesServiceImpl is
not threadsafe in the following sense:
when a Thread calls "installFeature", while another "installFeature" is still
running, the bundle state will be strange, as seen above.
The bundle will be listed as installed but not have any services deployed.
I worked around this by waiting for the installation to finish.
> NullPointerException when fileinstall/configadmin is used directly after
> startup
> --------------------------------------------------------------------------------
>
> Key: KARAF-3798
> URL: https://issues.apache.org/jira/browse/KARAF-3798
> Project: Karaf
> Issue Type: Bug
> Reporter: Fabian Lange
>
> This error happens pretty frequently with M3, when there is a config file
> created directly after startup. I tried to look how scr is implemented, but
> everything newer than 1.8.2 seems to be a mess in git.
> {code}
> 2015-06-19 15:55:12,249 | ERROR | 43-3aaf88a7bd8b) | configadmin
> | 3 - org.apache.felix.configadmin - 1.8.4 | Unexpected problem
> delivering configuration event to [org.osgi.service.cm.ConfigurationListener,
> id=30, bundle=9/mvn:org.apache.felix/org.apache.felix.scr/1.8.2]
> java.lang.NullPointerException
> at
> org.apache.felix.scr.impl.config.ConfigurationSupport.configurationEvent(ConfigurationSupport.java:283)[9:org.apache.felix.scr:1.8.2]
> at
> org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.sendEvent(ConfigurationManager.java:2036)[3:org.apache.felix.configadmin:1.8.4]
> at
> org.apache.felix.cm.impl.ConfigurationManager$FireConfigurationEvent.run(ConfigurationManager.java:2005)[3:org.apache.felix.configadmin:1.8.4]
> at
> org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:103)[3:org.apache.felix.configadmin:1.8.4]
> at java.lang.Thread.run(Thread.java:745)[:1.8.0_40]
> {code}
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