Łukasz Dywicki created KARAF-7522:
-------------------------------------
Summary: Duplicate feature name and version cause stack overflow
errors
Key: KARAF-7522
URL: https://issues.apache.org/jira/browse/KARAF-7522
Project: Karaf
Issue Type: Bug
Affects Versions: 4.2.7
Reporter: Łukasz Dywicki
Assignee: Łukasz Dywicki
Karaf feature resolver computation is prone to an error when same feature is
defined in two descriptors. While it can be an user error, quite often this
error is spot when feature generation is being used.
First occurrence of this error is seen in KARAF-6536 which links it with
Windows and version ranges. I was able to reproduce issue with much simpler
setup, validation with two feature files where one is "plain" and other is
"aggregated".
{code:java}
Exception in thread "main" java.lang.StackOverflowError
at java.base/java.util.AbstractCollection.<init>(AbstractCollection.java:66)
at java.base/java.util.AbstractList.<init>(AbstractList.java:78)
at
java.base/java.util.Collections$SingletonList.<init>(Collections.java:4837)
at java.base/java.util.Collections.singletonList(Collections.java:4823)
at
org.apache.felix.utils.resource.SimpleFilter.parseSubstring(SimpleFilter.java:367)
at
org.apache.felix.utils.resource.SimpleFilter.convert(SimpleFilter.java:564)
at
org.apache.felix.utils.resource.RequirementImpl.getFilter(RequirementImpl.java:133)
at
org.apache.felix.utils.resource.RequirementImpl.<init>(RequirementImpl.java:77)
at
org.apache.felix.utils.resource.RequirementImpl.<init>(RequirementImpl.java:44)
at
org.apache.karaf.features.internal.resolver.ResourceUtils.addIdentityRequirement(ResourceUtils.java:127)
at
org.apache.karaf.features.internal.resolver.ResourceUtils.addIdentityRequirement(ResourceUtils.java:107)
at
org.apache.karaf.features.internal.resolver.ResourceUtils.addIdentityRequirement(ResourceUtils.java:99)
at
org.apache.karaf.features.internal.region.Subsystem.requireFeature(Subsystem.java:284)
at
org.apache.karaf.features.internal.region.Subsystem.doBuild(Subsystem.java:350)
at
org.apache.karaf.features.internal.region.Subsystem.build(Subsystem.java:332)
at
org.apache.karaf.features.internal.region.Subsystem.doBuild(Subsystem.java:390)
at
org.apache.karaf.features.internal.region.Subsystem.build(Subsystem.java:332)
at
org.apache.karaf.features.internal.region.Subsystem.doBuild(Subsystem.java:390)
{code}
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