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https://issues.apache.org/jira/browse/SLING-5525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carsten Ziegeler resolved SLING-5525.
-------------------------------------
Resolution: Fixed
Fixed/checked all places where the provider is fetched. A null check is now in
all places
> Potential NPE / race condition with unregistered resource providers
> -------------------------------------------------------------------
>
> Key: SLING-5525
> URL: https://issues.apache.org/jira/browse/SLING-5525
> Project: Sling
> Issue Type: Bug
> Components: ResourceResolver
> Affects Versions: Resource Resolver 1.4.0, Resource Resolver 1.4.2
> Reporter: Carsten Ziegeler
> Assignee: Carsten Ziegeler
> Fix For: Resource Resolver 1.4.4
>
>
> There is a race condition with unregistering provider handlers and iterating
> over them. For example this NPE might happen in such a case:
> 15.02.2016 09:17:02.485 WARN [sling-oak-observation-68]
> org.apache.jackrabbit.oak.jcr.observation.ChangeProcessor Error while
> dispatching observation events for /*[1b, oak:Unstructured, sling:Folder, no
> local]
> java.lang.NullPointerException: null
> at
> org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.authenticate(ProviderManager.java:156)
> at
> org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager.getOrCreateProvider(ProviderManager.java:85)
> at
> org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager$1$1.seek(ProviderManager.java:213)
> at
> org.apache.sling.resourceresolver.impl.providers.stateful.ProviderManager$1$1.seek(ProviderManager.java:205)
> at
> org.apache.sling.resourceresolver.impl.helper.AbstractIterator.hasNext(AbstractIterator.java:33)
> at
> org.apache.sling.resourceresolver.impl.helper.ResourceResolverControl.adaptTo(ResourceResolverControl.java:474)
> at
> org.apache.sling.resourceresolver.impl.ResourceResolverImpl.adaptTo(ResourceResolverImpl.java:830)
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