[jboss-jira] [JBoss JIRA] (WFCORE-1765) unclear NullPointerException if the deployment-scanner element is removed from the configuration

[Brian Stansberry (JIRA)]

    [ https://issues.jboss.org/browse/WFCORE-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13289340#comment-13289340 ] 

Brian Stansberry commented on WFCORE-1765:
------------------------------------------

[~ehugonnet] If this isn't the scanner logic itself but is a kernel issue please change the component to Domain Management. Please also reassign the downstream JBEAP to yourself and fix the component. 

> unclear NullPointerException if the deployment-scanner element is removed from the configuration
> ------------------------------------------------------------------------------------------------
>
>                 Key: WFCORE-1765
>                 URL: https://issues.jboss.org/browse/WFCORE-1765
>             Project: WildFly Core
>          Issue Type: Bug
>          Components: Deployment Scanner
>    Affects Versions: 2.0.10.Final
>            Reporter: Wolf-Dieter Fink
>            Assignee: ehsavoie Hugonnet
>              Labels: deployment
>
> If the deployment scanner element is removed from the configuration of the standalone server a NullPointerException is logged which is unclear and difficult to find as the stack does not show any hint.
> Config:
> {xml}
>         <subsystem xmlns="urn:jboss:domain:deployment-scanner:2.0">
>             <!-- deployment-scanner path="deployments" relative-to="jboss.server.base.dir" scan-interval="5000" runtime-failure-causes-rollback="${jboss.deployment.scanner.rollback.on.failure:false}"/ -->
>         </subsystem>
> {xml}
> Log message:
> ERROR [org.jboss.as.controller.management-operation] (ServerService Thread Pool -- 34) WFLYCTL0403: Unexpected failure during execution of the following operation(s): []: java.lang.NullPointerException
> 	at org.jboss.as.controller.AbstractOperationContext$Step.access$300(AbstractOperationContext.java:1185)
> 	at org.jboss.as.controller.AbstractOperationContext.executeResultHandlerPhase(AbstractOperationContext.java:767)
> 	at org.jboss.as.controller.AbstractOperationContext.executeDoneStage(AbstractOperationContext.java:753)
> 	at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:680)
> 	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:370)
> 	at org.jboss.as.controller.ParallelBootOperationStepHandler$ParallelBootTask.run(ParallelBootOperationStepHandler.java:359)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> 	at org.jboss.threads.JBossThread.run(JBossThread.java:320)



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