Carsten Ziegeler created SLING-5525:
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Summary: 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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