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https://issues.apache.org/jira/browse/SLING-10938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17449174#comment-17449174
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Karl Pauls commented on SLING-10938:
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[~rombert], I'm not sure I know what behavior we are talking about. Clearly,
the actual error happens somewhere in the event.impl so it is hard to say where
the error is. If this is during shutdown, we'd have to see if the start level
order is correct for all of these.
> Exception thrown on Sling Starter shutdown in JobManagerConfiguration
> ---------------------------------------------------------------------
>
> Key: SLING-10938
> URL: https://issues.apache.org/jira/browse/SLING-10938
> Project: Sling
> Issue Type: Task
> Components: Event
> Affects Versions: Event 4.2.24
> Reporter: Michał Goliński
> Priority: Minor
> Attachments: stacktrace.txt
>
>
> On stopping the Sling Starter with Ctrl+C we can occasionally see the
> following stacktrace:
> {code:java}
> ERROR : bundle org.apache.sling.event:4.2.20
> (151)[org.apache.sling.event.impl.jobs.config.JobManagerConfiguration(247)] :
> The activate method has thrown an exception
> java.lang.IllegalArgumentException: Can't create child on a synthetic root
> at
> org.apache.sling.resourceresolver.impl.ResourceResolverImpl.create(ResourceResolverImpl.java:1006)
> ...
> at
> org.apache.sling.api.resource.ResourceUtil.getOrCreateResource(ResourceUtil.java:571)
> at
> org.apache.sling.event.impl.support.ResourceHelper.getOrCreateBasePath(ResourceHelper.java:258)
> at
> org.apache.sling.event.impl.jobs.config.JobManagerConfiguration.activate(JobManagerConfiguration.java:225)
> ...
> at
> org.apache.sling.serviceusermapping.impl.ServiceUserMapperImpl.executeServiceRegistrations(ServiceUserMapperImpl.java:439)
> at
> org.apache.sling.serviceusermapping.impl.ServiceUserMapperImpl.lambda$executeServiceRegistrationsAsync$0(ServiceUserMapperImpl.java:406)
> at
> java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
> at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
> at
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
> at java.base/java.lang.Thread.run(Thread.java:833)
> {code}
> This happens also with bundle version 4.2.24.
> This doesn't nappen every time, but I've seen up to seven of these at a time
> (the number of stacktraces changes), see the attached file. This might be
> similar to SLING-10204 , although in the debugger I can see the
> ServiceUserMapped being mentioned, not ResourceResolverFactory.
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