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https://issues.apache.org/jira/browse/SLING-11677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634411#comment-17634411
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Konrad Windszus commented on SLING-11677:
-----------------------------------------

bq.  In any case, the best is to use a separate servlet context helper and not 
rely on the default.

Why? This is not necessary for simple servlets and IMHO just unnecessary 
overhead.

> Sling Engine Context 'org.apache.sling' has higher ranking than 'default' 
> context
> ---------------------------------------------------------------------------------
>
>                 Key: SLING-11677
>                 URL: https://issues.apache.org/jira/browse/SLING-11677
>             Project: Sling
>          Issue Type: Bug
>          Components: Engine
>            Reporter: Konrad Windszus
>            Priority: Major
>         Attachments: Servlet-Contexts.png
>
>
> When a servlet is registered with the OSGi HTTP Whiteboard pattern without 
> the property {{osgi.http.whiteboad.context.select}} the "default" context 
> helper is used 
> (https://docs.osgi.org/specification/osgi.cmpn/7.0.0/service.http.whiteboard.html#service.http.whiteboard.common.properties)
> With the Jetty Implementation from Felix in Sling this has the 
> {{service.ranking}} {{Integer.MIN_VALUE}} while the one for the default Sling 
> Main Servlet has no explicit ranking (i.e. 0). That leads to the fact that 
> the Sling Main servlet always takes precedence as
> {quote}
> In the case of two Servlet Context Helpers with the same path, the service 
> with the highest ranking is searched first for a match. In the case of a tie, 
> the lowest service ID is searched first.
> {quote}
> (https://docs.osgi.org/specification/osgi.cmpn/7.0.0/service.http.whiteboard.html#service.http.whiteboard.servletcontext)
>  as both "default" and "org.apache.sling" are registered for path "<root>".
> The Sling Main servlet context should use a lower ranking so that simple 
> servlets registered via OSGI HTTP Whiteboard pattern without explicit context 
> can kick in at all!
> Attached the web console of Sling Starter 12:
>  !Servlet-Contexts.png! 



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