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https://issues.apache.org/jira/browse/FELIX-6823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18079680#comment-18079680
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Roy Teeuwen commented on FELIX-6823:
------------------------------------

[~frm]  [~paulrutter]  there are even more cases where it goes wrong, see my PR 
in [https://github.com/apache/felix-dev/pull/503] 

Didn't see there was already a ticket for this ;)

> Fix unrecoverable Jetty state after NPE in WhiteboardManager shutdown
> ---------------------------------------------------------------------
>
>                 Key: FELIX-6823
>                 URL: https://issues.apache.org/jira/browse/FELIX-6823
>             Project: Felix
>          Issue Type: Bug
>          Components: HTTP Service
>            Reporter: Francesco Mari
>            Priority: Major
>             Fix For: http.jetty12-1.1.10, http.base-5.1.18, http.jetty-5.2.2
>
>
> A _NullPointerException_ in {{WhiteboardManager.deactivate()}} during a 
> configuration-triggered Jetty restart aborts the shutdown sequence. Because 
> {{stopJetty()}} and {{updated()}} have no exception handling, 
> {{startJetty()}} is never called — the server keeps running with a corrupted 
> {{WhiteboardManager}}, all subsequent servlet registrations fail with 
> {{IndexOutOfBoundsException}}, and the system is permanently unusable until 
> the JVM is restarted.
> See https://github.com/apache/felix-dev/pull/481.



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