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https://issues.apache.org/jira/browse/SLING-7234?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16284688#comment-16284688
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Radu Cotescu commented on SLING-7234:
-------------------------------------

BTW, version 2.0.48 was broken due to the wrong OSGi R6 annotations migration, 
because the Script Engine Factories were not added any more - see SLING-7201.

> ServiceFactory.getService() resulted in a cycle in sling karaf 
> ---------------------------------------------------------------
>
>                 Key: SLING-7234
>                 URL: https://issues.apache.org/jira/browse/SLING-7234
>             Project: Sling
>          Issue Type: Bug
>          Components: Karaf, Scripting
>    Affects Versions: Scripting Core 2.0.50
>         Environment: Debian linux, jdk 1.8.0_151-b12
>            Reporter: Ivo Leitão
>            Assignee: Oliver Lietz
>         Attachments: clean.log.1, grep-errors.log, sample.log.1
>
>
> Hello,
> Once in a while on the first startup of Sling on Karaf I'm seeing the 
> exception ServiceFactory.getService() resulted in a cycle. This does not 
> happen every time only on some startups. 
> After the first startup on the next restart this exception does not appear 
> anymore.
> I've picked a sample of the exception. Unfortunately this seems like a 
> concurrency issue and therefore much harder to find a pattern but it happens 
> mostly with sling scripting. I've seen other exceptions also with sling 
> scripting but this one is the most common 
> I've uploaded two log files:
> clean.log.1 with a clean startup and
> sample.log.1 with the aforementioned exception



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