Hi all. I'm getting some NoClassDefFoundErrors and other exceptions/errors
after updating some bundles. The bundles work fine before. Restarting Felix
clears the problem (no more NCDFE) and the newly updating bundles work fine
once again.
I'd like to be able to support updating while running, if possible.
Here's a sample stacktrace:
2012-08-09 10:44:56,095 [ERROR] Error while executing
AutomaticFixerCoverArtCommand (AggregatedPolic
yCommand.java:65, thread policy pool 0)
java.lang.ExceptionInInitializerError
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.dimensionsOf(CoverArtUtils.java
:163)
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.openImageDimension(CoverArtUtil
s.java:187)
[...]
Caused by: java.lang.NullPointerException
at
org.apache.felix.framework.BundleRevisionImpl.getResourcesLocal(BundleRevisionImpl.java:510)
at
org.apache.felix.framework.BundleWiringImpl.findResourcesByDelegation(BundleWiringImpl.java:1127)
at
org.apache.felix.framework.BundleWiringImpl.getResourcesByDelegation(BundleWiringImpl.java:1037)
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoaderJava5.getResources(BundleWiringImpl.java:1778)
at
org.eclipse.jetty.osgi.boot.internal.webapp.OSGiWebappClassLoader.getResources(OSGiWebappClassLoader.java:115)
at
java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:340)
at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:432)
at
javax.imageio.spi.IIORegistry.registerApplicationClasspathSpis(IIORegistry.java:206)
at javax.imageio.spi.IIORegistry.<init>(IIORegistry.java:138)
at
javax.imageio.spi.IIORegistry.getDefaultInstance(IIORegistry.java:159)
at javax.imageio.ImageIO.<clinit>(ImageIO.java:64)
2012-08-09 10:44:57,061 [ERROR] Error while executing
AutomaticFixerCoverArtCommand (AggregatedPolicyCommand.java:65, thread
policy pool 1)
java.lang.NoClassDefFoundError: Could not initialize class
javax.imageio.ImageIO
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.dimensionsOf(CoverArtUtils.java:163)
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.openImageDimension(CoverArtUtils.java:187)
[... no caused by trace here...]
Immediately before that I get something I only see once I enable Felix
debug logging:
ERROR: Bundle com.elsten.bliss.ui [34] Unable to get module class path.
(java.lang.NullPointerExcepti
on)
java.lang.NullPointerException
at
org.apache.felix.framework.BundleRevisionImpl.calculateContentPath(BundleRevisionImpl.java
:410)
at
org.apache.felix.framework.BundleRevisionImpl.initializeContentPath(BundleRevisionImpl.jav
a:347)
at
org.apache.felix.framework.BundleRevisionImpl.getContentPath(BundleRevisionImpl.java:333)
at
org.apache.felix.framework.BundleRevisionImpl.getResourcesLocal(BundleRevisionImpl.java:49
3)
at
org.apache.felix.framework.BundleWiringImpl.findResourcesByDelegation(BundleWiringImpl.jav
a:1127)
at
org.apache.felix.framework.BundleWiringImpl.getResourcesByDelegation(BundleWiringImpl.java
:1037)
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoaderJava5.getResources(BundleWiri
ngImpl.java:1778)
at
org.eclipse.jetty.osgi.boot.internal.webapp.OSGiWebappClassLoader.getResources(OSGiWebappC
lassLoader.java:115)
at
java.util.ServiceLoader$LazyIterator.hasNext(ServiceLoader.java:340)
at java.util.ServiceLoader$1.hasNext(ServiceLoader.java:432)
at
javax.imageio.spi.IIORegistry.registerApplicationClasspathSpis(IIORegistry.java:206)
at javax.imageio.spi.IIORegistry.<init>(IIORegistry.java:138)
at
javax.imageio.spi.IIORegistry.getDefaultInstance(IIORegistry.java:159)
at javax.imageio.ImageIO.<clinit>(ImageIO.java:64)
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.dimensionsOf(CoverArtUtils.java
:163)
at
com.elsten.bliss.music.policy.coverartpolicy.CoverArtUtils.openImageDimension(CoverArtUtil
s.java:187)
There are many of these NCDFEs but only one of those NPEs in
BundleRevisionImpl. Once those have been thrown, "all hell seems to break
loose" and I start getting NCDFEs for other classes including my own. Does
the original exception cause these downstream ones or are they unrelated?
During the update the Import-Package statements for javax.imageio.* remain
stable.
Let me know if more contextual logs are useful. I can provide the actual
code that's running if it helps (it's large though).
Dan
