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From "Xtra Coder (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FELIX-4520) NullPointerException in "fileinstall" thread - ResolverImpl.calculatePackageSpaces(ResolverImpl.java:553), felix framework v4.2.1
Date Fri, 23 May 2014 11:18:02 GMT

     [ https://issues.apache.org/jira/browse/FELIX-4520?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xtra Coder updated FELIX-4520:
------------------------------

    Description: 
I've got this NPE while updating a bundle in deploy folder (I'm running my staff under Karaf
3.0). Occurs in the following excerpt of org.apache.felix.framework.resolver.ResolverImpl
- wire.getProviderWiring() is null

                // Wrap the capability as a hosted capability if it comes
                // from a fragment, since we will need to know the host.
                BundleCapability c = wire.getCapability();
                if (!c.getRevision().equals(wire.getProviderWiring().getRevision()))
                {
                    c = new WrappedCapability(
                        wire.getProviderWiring().getRevision(),
                        (BundleCapabilityImpl) c);
                }
 
Initial startup of the system goes without problems. Let me known if some more details required
from my side.

*Update*: I suspect the problem is cause by another thread running in parallel and setting
wiring to null. I did not notice any synchronization between fileinstall and FelixFrameworkWiring
thread and later one may set m_wiring to null after fileinstall has checked it to be not null.

"FelixFrameworkWiring"
org.apache.felix.framework.BundleRevisionImpl.resolve(BundleRevisionImpl.java:303)
org.apache.felix.framework.BundleRevisionImpl.close(BundleRevisionImpl.java:653)
org.apache.felix.framework.BundleImpl.closeRevisions(BundleImpl.java:158)
org.apache.felix.framework.BundleImpl.refresh(BundleImpl.java:175)
org.apache.felix.framework.Felix.refreshBundle(Felix.java:4362)
org.apache.felix.framework.Felix.access$900(Felix.java:74)
org.apache.felix.framework.Felix$RefreshHelper.refreshOrRemove(Felix.java:4824)
org.apache.felix.framework.Felix.refreshPackages(Felix.java:4113)
org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:178)
java.lang.Thread.run(Thread.java:744)


  was:
I've got this NPE while updating a bundle in deploy folder (I'm running my staff under Karaf
3.0). Occurs in the following excerpt of org.apache.felix.framework.resolver.ResolverImpl
- wire.getProviderWiring() is null

                // Wrap the capability as a hosted capability if it comes
                // from a fragment, since we will need to know the host.
                BundleCapability c = wire.getCapability();
                if (!c.getRevision().equals(wire.getProviderWiring().getRevision()))
                {
                    c = new WrappedCapability(
                        wire.getProviderWiring().getRevision(),
                        (BundleCapabilityImpl) c);
                }
 
Initial startup of the system goes without problems. Let me known if some more details required
from my side.


> NullPointerException in "fileinstall" thread - ResolverImpl.calculatePackageSpaces(ResolverImpl.java:553),
felix framework v4.2.1
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: FELIX-4520
>                 URL: https://issues.apache.org/jira/browse/FELIX-4520
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>            Reporter: Xtra Coder
>
> I've got this NPE while updating a bundle in deploy folder (I'm running my staff under
Karaf 3.0). Occurs in the following excerpt of org.apache.felix.framework.resolver.ResolverImpl
- wire.getProviderWiring() is null
>                 // Wrap the capability as a hosted capability if it comes
>                 // from a fragment, since we will need to know the host.
>                 BundleCapability c = wire.getCapability();
>                 if (!c.getRevision().equals(wire.getProviderWiring().getRevision()))
>                 {
>                     c = new WrappedCapability(
>                         wire.getProviderWiring().getRevision(),
>                         (BundleCapabilityImpl) c);
>                 }
>  
> Initial startup of the system goes without problems. Let me known if some more details
required from my side.
> *Update*: I suspect the problem is cause by another thread running in parallel and setting
wiring to null. I did not notice any synchronization between fileinstall and FelixFrameworkWiring
thread and later one may set m_wiring to null after fileinstall has checked it to be not null.
> "FelixFrameworkWiring"
> org.apache.felix.framework.BundleRevisionImpl.resolve(BundleRevisionImpl.java:303)
> org.apache.felix.framework.BundleRevisionImpl.close(BundleRevisionImpl.java:653)
> org.apache.felix.framework.BundleImpl.closeRevisions(BundleImpl.java:158)
> org.apache.felix.framework.BundleImpl.refresh(BundleImpl.java:175)
> org.apache.felix.framework.Felix.refreshBundle(Felix.java:4362)
> org.apache.felix.framework.Felix.access$900(Felix.java:74)
> org.apache.felix.framework.Felix$RefreshHelper.refreshOrRemove(Felix.java:4824)
> org.apache.felix.framework.Felix.refreshPackages(Felix.java:4113)
> org.apache.felix.framework.FrameworkWiringImpl.run(FrameworkWiringImpl.java:178)
> java.lang.Thread.run(Thread.java:744)



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