[jira] [Created] (KARAF-6612) Get NPE in FeatureDeploymentListener.bundleChanged()

["Bob Paulin (Jira)" <ji...@apache.org>]

Bob Paulin created KARAF-6612:
---------------------------------

             Summary: Get NPE in FeatureDeploymentListener.bundleChanged()
                 Key: KARAF-6612
                 URL: https://issues.apache.org/jira/browse/KARAF-6612
             Project: Karaf
          Issue Type: Bug
          Components: karaf
    Affects Versions: 4.2.8, 4.2.1
            Reporter: Bob Paulin


I'm trying to run a standard distribution with all features defined as startup.   When I do this the karaf instance starts but logs a number of errors:
{code:java}
 2020-01-30T21:36:36,333 | ERROR | activator-1-thread-2 | FeatureDeploymentListener        | 27 - org.apache.karaf.deployer.features - 4.2.8 | Unable to update deployed features for bundle: org.apache.karaf.features.extension - 4.2.8
java.lang.NullPointerException: null
	at org.apache.karaf.deployer.features.FeatureDeploymentListener.bundleChanged(FeatureDeploymentListener.java:247) [!/:?]
	at org.apache.karaf.deployer.features.FeatureDeploymentListener.init(FeatureDeploymentListener.java:95) [!/:?]
	at org.apache.karaf.deployer.features.osgi.Activator$DeploymentFinishedListener.deploymentEvent(Activator.java:86) [!/:?]
	at org.apache.karaf.features.internal.service.FeaturesServiceImpl.registerListener(FeaturesServiceImpl.java:295) [!/:?]
	at org.apache.karaf.deployer.features.osgi.Activator.doStart(Activator.java:53) [!/:?]
	at org.apache.karaf.util.tracker.BaseActivator.run(BaseActivator.java:312) [!/:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_222]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_222]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_222]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_222]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]{code}
 

Some debugging shows the in the FeatureDeploymentListener the featuresService.listRequirements() is returning an empty map so the call to requirements.get(ROOT_REGION) is returning null before the next call to removeAll
{code:java}
Map<String, Set<String>> requirements =
featuresService.listRequirements();
requirements.get(ROOT_REGION).removeAll(reqsToRemove);
requirements.get(ROOT_REGION).addAll(reqsToAdd); {code}
 

Not sure if we just need a simple null check here or if I'm doing something not supported.  Thanks!

 



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