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From "Oliver Lietz (JIRA)" <>
Subject [jira] [Commented] (SLING-7234) ServiceFactory.getService() resulted in a cycle in sling karaf
Date Sun, 10 Dec 2017 12:22:03 GMT


Oliver Lietz commented on SLING-7234:

[~karlpauls], thanks for looking into it. The cycle-issue is indeed unrelated, but there are
more issues besides SLING-7301.
[~radu.cotescu], I was disrupted when migrating to R6 and Carsten took over and checking for
null was unfortunately missed.
[~ivoleitao], the versions in Sling's Karaf Features are more tested and "safe". Downgrade
to 2.0.46 until all issues are fixed.

> ServiceFactory.getService() resulted in a cycle in sling karaf 
> ---------------------------------------------------------------
>                 Key: SLING-7234
>                 URL:
>             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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