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Posted to dev@felix.apache.org by "Andreas Pieber (JIRA)" <ji...@apache.org> on 2012/06/06 11:39:22 UTC
[jira] [Created] (FELIX-3538) ConcurrentModificationException in
StatefulResolver
Andreas Pieber created FELIX-3538:
-------------------------------------
Summary: ConcurrentModificationException in StatefulResolver
Key: FELIX-3538
URL: https://issues.apache.org/jira/browse/FELIX-3538
Project: Felix
Issue Type: Bug
Components: Framework
Affects Versions: framework-4.0.2
Reporter: Andreas Pieber
I've just received the following felix exception after playing around with karaf 3 (using felix 4.0.2). Since I've done so already for about 1k times it's quite a rare one; nevertheless:
{code}
java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)[:1.7.0_03-icedtea]
at java.util.ArrayList$Itr.next(ArrayList.java:791)[:1.7.0_03-icedtea]
at org.apache.felix.framework.StatefulResolver$ResolverStateImpl.getCandidates(StatefulResolver.java:1333)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.StatefulResolver.isAllowedDynamicImport(StatefulResolver.java:521)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:216)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.BundleWiringImpl.searchDynamicImports(BundleWiringImpl.java:1539)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1439)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:72)[org.apache.felix.framework-4.0.2.jar:]
at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1843)[org.apache.felix.framework-4.0.2.jar:]
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)[:1.7.0_03-icedtea]
at org.ops4j.pax.exam.rbc.internal.Activator.bindRBC(Activator.java:144)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.exam.rbc.internal.Activator.access$600(Activator.java:44)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.exam.rbc.internal.Activator$2.call(Activator.java:125)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.swissbox.core.ContextClassLoaderUtils.doWithClassLoader(ContextClassLoaderUtils.java:60)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.exam.rbc.internal.Activator.register(Activator.java:109)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.exam.rbc.internal.Activator.access$000(Activator.java:44)[97:org.ops4j.pax.exam.rbc:2.4.0]
at org.ops4j.pax.exam.rbc.internal.Activator$1.run(Activator.java:89)[97:org.ops4j.pax.exam.rbc:2.4.0]
at java.lang.Thread.run(Thread.java:722)[:1.7.0_03-icedtea]
{code}
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[jira] [Commented] (FELIX-3538) ConcurrentModificationException in
StatefulResolver
Posted by "Guillaume Nodet (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/FELIX-3538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290059#comment-13290059 ]
Guillaume Nodet commented on FELIX-3538:
----------------------------------------
At first glance, it looks like the m_hooks list holding the resolver hooks is not synchronized at all.
I suppose using a CopyOnWriteArrayList instead of a simple ArrayList would work, especially as this list should not change very often.
> ConcurrentModificationException in StatefulResolver
> ---------------------------------------------------
>
> Key: FELIX-3538
> URL: https://issues.apache.org/jira/browse/FELIX-3538
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: framework-4.0.2
> Reporter: Andreas Pieber
>
> I've just received the following felix exception after playing around with karaf 3 (using felix 4.0.2). Since I've done so already for about 1k times it's quite a rare one; nevertheless:
> {code}
> java.util.ConcurrentModificationException
> at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)[:1.7.0_03-icedtea]
> at java.util.ArrayList$Itr.next(ArrayList.java:791)[:1.7.0_03-icedtea]
> at org.apache.felix.framework.StatefulResolver$ResolverStateImpl.getCandidates(StatefulResolver.java:1333)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.StatefulResolver.isAllowedDynamicImport(StatefulResolver.java:521)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.StatefulResolver.resolve(StatefulResolver.java:216)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.BundleWiringImpl.searchDynamicImports(BundleWiringImpl.java:1539)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1439)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:72)[org.apache.felix.framework-4.0.2.jar:]
> at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1843)[org.apache.felix.framework-4.0.2.jar:]
> at java.lang.ClassLoader.loadClass(ClassLoader.java:356)[:1.7.0_03-icedtea]
> at org.ops4j.pax.exam.rbc.internal.Activator.bindRBC(Activator.java:144)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.exam.rbc.internal.Activator.access$600(Activator.java:44)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.exam.rbc.internal.Activator$2.call(Activator.java:125)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.swissbox.core.ContextClassLoaderUtils.doWithClassLoader(ContextClassLoaderUtils.java:60)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.exam.rbc.internal.Activator.register(Activator.java:109)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.exam.rbc.internal.Activator.access$000(Activator.java:44)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at org.ops4j.pax.exam.rbc.internal.Activator$1.run(Activator.java:89)[97:org.ops4j.pax.exam.rbc:2.4.0]
> at java.lang.Thread.run(Thread.java:722)[:1.7.0_03-icedtea]
> {code}
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