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https://issues.apache.org/jira/browse/KARAF-2128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574519#comment-13574519
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Jean-Baptiste Onofré commented on KARAF-2128:
---------------------------------------------
I identified a couple of issues around the Cellar features support. It's on the
way to be fixed.
> NPE in FeaturesEventHandler
> ---------------------------
>
> Key: KARAF-2128
> URL: https://issues.apache.org/jira/browse/KARAF-2128
> Project: Karaf
> Issue Type: Bug
> Components: cellar-features
> Affects Versions: cellar-3.0.0
> Environment: Windows 8 64-bit
> Reporter: Ryan Moquin
> Assignee: Jean-Baptiste Onofré
>
> I don't know if this is related to the fact that I'm running a distribution I
> created with Cellar pre-installed (I think I've seen this happen when
> installing cellar manually from karaf 3.0.0-SNAPSHOT, but I'll re-check it),
> I see the following error shortly (after this paragraph) after startup
> without having executed anything on Karaf other than to view the log. I
> hooked up a debugger and the groupManager is null. I'm assuming something
> isn't getting initialized properly? I get a similar error in a different
> class if the groups config file doesn't exist (might want to prevent the NPE
> in those cases and either default a value or print a clear error message),
> but I don't have the stacktrace handy. I'll try to get it if you want,
> unless you don't need it.
> 2013-01-18 09:29:17,274 | ERROR | pool-11-thread-9 | EventDispatchTask
> | 13 - org.apache.karaf.cellar.cor
> e - 3.0.0.SNAPSHOT | Error while dispatching task
> java.lang.NullPointerException
> at
> org.apache.karaf.cellar.features.FeaturesEventHandler.handle(FeaturesEventHandler.java:64)[36:org.apache.kara
> f.cellar.features:3.0.0.SNAPSHOT]
> at
> org.apache.karaf.cellar.features.FeaturesEventHandler.handle(FeaturesEventHandler.java:33)[36:org.apache.kara
> f.cellar.features:3.0.0.SNAPSHOT]
> at Proxye81779f6_8100_417b_990b_3dc2dce8c97a.handle(Unknown Source)[:]
> at Proxy20fcbff6_e61b_4560_993f_d0c8c0b67d63.handle(Unknown Source)[:]
> at
> org.apache.karaf.cellar.core.event.EventDispatchTask.run(EventDispatchTask.java:77)[13:org.apache.karaf.cella
> r.core:3.0.0.SNAPSHOT]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)[:1.7.0_09]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)[:1.7.0_09]
> at java.lang.Thread.run(Thread.java:722)[:1.7.0_09]
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