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From "Guillaume Nodet (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (KARAF-4652) ConcurrentModificationException and NullPointerException when starting Karaf
Date Tue, 23 Aug 2016 11:54:21 GMT

     [ https://issues.apache.org/jira/browse/KARAF-4652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guillaume Nodet resolved KARAF-4652.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 4.0.6
                   4.1.0

> ConcurrentModificationException and NullPointerException when starting Karaf
> ----------------------------------------------------------------------------
>
>                 Key: KARAF-4652
>                 URL: https://issues.apache.org/jira/browse/KARAF-4652
>             Project: Karaf
>          Issue Type: Bug
>    Affects Versions: 4.0.4
>         Environment: OS X 10.11.6 with Java 1.7.0_71
>            Reporter: Aled Sage
>            Assignee: Guillaume Nodet
>             Fix For: 4.1.0, 4.0.6
>
>         Attachments: karaf-startup-fails.log
>
>
> While starting Karaf 4.0.4, I hit a couple of exceptions (shown below; log attached).
My app subsequently failed, which I presume is related!
> I hit the {{ConcurrentModificationException}} shown below. It logged this twice (50ms
apart). The only other mention of this stacktrace I could find was in http://mail-archives.apache.org/mod_mbox/karaf-user/201508.mbox/%3CCALm0H57SU2xppgrkDTBBPZ2rscdjTG5xE-HZdBf1eBAQNpv+Aw@mail.gmail.com%3E
(which was against Karaf 4.0.1):
> {noformat}
> 13:25:07,214 WARN    9 osgi.Activator                 [pool-11-thread-1] Error starting
activator
> java.lang.IllegalStateException: Invalid BundleContext.
>         at org.apache.felix.framework.BundleContextImpl.checkValidity(BundleContextImpl.java:511)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:328)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:355)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.karaf.util.tracker.BaseActivator.register(BaseActivator.java:304)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.util.tracker.BaseActivator.register(BaseActivator.java:297)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.osgi.Activator.doStart(Activator.java:133)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.util.tracker.BaseActivator.run(BaseActivator.java:233)[9:org.apache.karaf.features.core:4.0.4]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_71]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_71]
>         at java.lang.Thread.run(Thread.java:745)[:1.7.0_71]
> 13:25:07,218 ERROR   9 features.core                  [lixDispatchQueue] FrameworkEvent
ERROR - org.apache.karaf.features.core
> org.osgi.framework.BundleException: Activator stop error in bundle org.apache.karaf.features.core
[9].
>         at org.apache.felix.framework.Felix.stopBundle(Felix.java:2666)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1389)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)[org.apache.felix.framework-5.4.0.jar:]
>         at java.lang.Thread.run(Thread.java:745)[:1.7.0_71]
> Caused by: java.util.ConcurrentModificationException
>         at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:859)[:1.7.0_71]
>         at java.util.ArrayList$Itr.next(ArrayList.java:831)[:1.7.0_71]
>         at org.apache.karaf.util.tracker.BaseActivator.doStop(BaseActivator.java:124)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.osgi.Activator.doStop(Activator.java:274)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.util.tracker.BaseActivator.stop(BaseActivator.java:90)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.felix.framework.util.SecureAction.stopActivator(SecureAction.java:719)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.stopBundle(Felix.java:2610)[org.apache.felix.framework-5.4.0.jar:]
>         ... 3 more
> {noformat}
> It then hit the {{NullPointerException}} shown below:
> {noformat}
> 13:25:08,373 WARN    9 osgi.Activator                 [pool-25-thread-1] Error starting
activator
> java.lang.NullPointerException
>         at org.eclipse.equinox.internal.region.CollisionHookHelper.getCollisionHook(CollisionHookHelper.java:27)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.osgi.Activator.doStart(Activator.java:130)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.util.tracker.BaseActivator.run(BaseActivator.java:233)[9:org.apache.karaf.features.core:4.0.4]
>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)[:1.7.0_71]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_71]
>         at java.lang.Thread.run(Thread.java:745)[:1.7.0_71]
> {noformat}
> Followed by this error:
> {noformat}
> 13:25:09,509 ERROR   8 felix.fileinstall              [FelixStartLevel ] Failed to install
artifact: /Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/etc/org.apache.karaf.features.repos.cfg
> java.io.IOException: Cannot remove old file '/Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/data/cache/bundle7/data/config/org/apache/karaf/features/repos.config';
changes in '/Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/data/cache/bundle7/data/config/org/apache/karaf/features/repos.config6950758717213936408.tmp'
cannot be persisted at this time
>         at org.apache.felix.cm.file.FilePersistenceManager._store(FilePersistenceManager.java:715)[7:org.apache.felix.configadmin:1.8.8]
>         at org.apache.felix.cm.file.FilePersistenceManager.store(FilePersistenceManager.java:660)[7:org.apache.felix.configadmin:1.8.8]
>         at org.apache.felix.cm.impl.CachingPersistenceManagerProxy.store(CachingPersistenceManagerProxy.java:242)[7:org.apache.felix.configadmin:1.8.8]
>         at org.apache.felix.cm.impl.ConfigurationImpl.update(ConfigurationImpl.java:381)[7:org.apache.felix.configadmin:1.8.8]
>         at org.apache.felix.cm.impl.ConfigurationAdapter.update(ConfigurationAdapter.java:131)[7:org.apache.felix.configadmin:1.8.8]
>         at org.apache.felix.fileinstall.internal.ConfigInstaller.setConfig(ConfigInstaller.java:249)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.ConfigInstaller.install(ConfigInstaller.java:76)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.DirectoryWatcher.install(DirectoryWatcher.java:931)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.DirectoryWatcher.install(DirectoryWatcher.java:865)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:482)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:358)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.DirectoryWatcher.start(DirectoryWatcher.java:241)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.FileInstall.updated(FileInstall.java:243)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.fileinstall.internal.FileInstall.start(FileInstall.java:127)[8:org.apache.felix.fileinstall:3.5.0]
>         at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.activateBundle(Felix.java:2226)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.startBundle(Felix.java:2144)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1371)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)[org.apache.felix.framework-5.4.0.jar:]
>         at java.lang.Thread.run(Thread.java:745)[:1.7.0_71]
> {noformat}
> And then much later this error:
> {noformat}
> 13:26:21,765 ERROR   9 service.BootFeaturesInstaller  [pool-7-thread-1 ] Error installing
boot features
> org.osgi.framework.BundleException: Unable to cache bundle: mvn:org.bouncycastle/bcprov-jdk15on/1.49
>         at org.apache.felix.framework.Felix.installBundle(Felix.java:2975)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.BundleContextImpl.installBundle(BundleContextImpl.java:167)[org.apache.felix.framework-5.4.0.jar:]
>         at org.eclipse.equinox.internal.region.BundleIdBasedRegion.installBundle0(BundleIdBasedRegion.java:117)[9:org.apache.karaf.features.core:4.0.4]
>         at org.eclipse.equinox.internal.region.BundleIdBasedRegion.installBundleAtLocation(BundleIdBasedRegion.java:97)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.service.FeaturesServiceImpl.installBundle(FeaturesServiceImpl.java:1174)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:724)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1089)[9:org.apache.karaf.features.core:4.0.4]
>         at org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:985)[9:org.apache.karaf.features.core:4.0.4]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_71]
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_71]
>         at java.lang.Thread.run(Thread.java:745)[:1.7.0_71]
> Caused by: java.io.FileNotFoundException: /Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/data/cache/bundle22/version0.0/bundle.jar
(No such file or directory)
>         at java.util.zip.ZipFile.open(Native Method)[:1.7.0_71]
>         at java.util.zip.ZipFile.<init>(ZipFile.java:215)[:1.7.0_71]
>         at java.util.zip.ZipFile.<init>(ZipFile.java:145)[:1.7.0_71]
>         at java.util.zip.ZipFile.<init>(ZipFile.java:159)[:1.7.0_71]
>         at org.apache.felix.framework.util.SecureAction.openZipFile(SecureAction.java:650)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.util.WeakZipFileFactory$WeakZipFile.<init>(WeakZipFileFactory.java:187)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.util.WeakZipFileFactory$WeakZipFile.<init>(WeakZipFileFactory.java:169)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.util.WeakZipFileFactory.create(WeakZipFileFactory.java:72)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.cache.JarRevision.<init>(JarRevision.java:84)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.cache.BundleArchive.createRevisionFromLocation(BundleArchive.java:872)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.cache.BundleArchive.reviseInternal(BundleArchive.java:550)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.cache.BundleArchive.<init>(BundleArchive.java:153)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.cache.BundleCache.create(BundleCache.java:277)[org.apache.felix.framework-5.4.0.jar:]
>         at org.apache.felix.framework.Felix.installBundle(Felix.java:2971)[org.apache.felix.framework-5.4.0.jar:]
>         ... 11 more
> {noformat}
> When I subsequently checked, the file did exist, but its timestamp appears to be 1 second
later (unfortunately no millisecond granularity on OSX):
> {noformat}
> stat /Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/data/cache/bundle22/version0.0/bundle.jar
> 16777220 397678970 -rw-r--r-- 1 aled staff 0 2476362 "Aug 11 16:43:26 2016" "Aug 11 13:26:22
2016" "Aug 11 13:26:22 2016" "Aug 11 13:26:22 2016" 4096 4840 0 /Users/aled/repos/cloudsoft/amp/karaf/cloudsoft-amp/target/cloudsoft-amp-karaf-3.3.0-SNAPSHOT/data/cache/bundle22/version0.0/bundle.jar
> {noformat}
> ---
> It's worth describing how I was running this! While attempting to reproduce a different
problem, I wrote a simple scripted to repeatedly install and start karaf, and then to tear
it down if the problem did not occur.
> Teardown involved calling {{./bin/stop}}, waiting a second, and then deleting the install
dir. I hit this error on the 97th run.
> By that point, there were two other Karaf instances left running (note these were running
in install directories that I had deleted, but that would have had the same path as my newest
Karaf).
> For one of those Karafs left behind, the call to {{./bin/stop}} at the end of the 92nd
run reported:
> {noformat}
> Can't connect to the container. The container is not running.
> {noformat}
> Unfortunately I did not keep the logs for those old (seemingly successful) runs of Karaf.



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