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Posted to user@karaf.apache.org by Patrick Magon <pm...@gmail.com> on 2019/06/13 15:20:43 UTC
Slow shutdown of karaf
Hello,
I have a problem stopping karaf in a production environment: after using
the system for days, the stop takes minutes (> 30 min).
I am able to reproduce this behavior by continually running the integration
tests during 1 hour...
I tried to monitor karaf and everything seems ok (CPU, memory, no garbage
collection....).
I also tried to monitor all involved sub-systems (kafka, solr...) but
everything looks ok.
There is no error during the shutdown but all steps execution are slower...
By using a profiler, I found the following:
- Many "ClassNotFoundException" are thrown (but not logged) during the
shutdown (millions of "ClassNotFoundException)
Most of them comes from "org.apache.felix.framework.ExtentionManager"
(method getClassByDelegation)...
- I also found that lsof shows a lot of files (bundles jars) (that are
duplicated by thread ??)
These "open files" increase continually...
I'm a little lost with these problems...
I am using karaf 4.1.2
Any suggestion or hints to investigate are welcome !
Thanks
Patrick
Re: Slow shutdown of karaf
Posted by Patrick Magon <pm...@gmail.com>.
Hello JB,
I'm using Felix
On Thu, Jun 13, 2019 at 5:33 PM Jean-Baptiste Onofré <jb...@nanthrax.net>
wrote:
> Hi Patrick,
>
> which OSGi framework are you using ? Equinox or Felix ?
>
> Regards
> JB
>
> On 13/06/2019 17:20, Patrick Magon wrote:
> > Hello,
> > I have a problem stopping karaf in a production environment: after using
> > the system for days, the stop takes minutes (> 30 min).
> >
> > I am able to reproduce this behavior by continually running the
> > integration tests during 1 hour...
> >
> > I tried to monitor karaf and everything seems ok (CPU, memory, no
> > garbage collection....).
> > I also tried to monitor all involved sub-systems (kafka, solr...) but
> > everything looks ok.
> >
> > There is no error during the shutdown but all steps execution are
> slower...
> > By using a profiler, I found the following:
> > - Many "ClassNotFoundException" are thrown (but not logged) during the
> > shutdown (millions of "ClassNotFoundException)
> > Most of them comes from "org.apache.felix.framework.ExtentionManager"
> > (method getClassByDelegation)...
> >
> > - I also found that lsof shows a lot of files (bundles jars) (that are
> > duplicated by thread ??)
> > These "open files" increase continually...
> >
> > I'm a little lost with these problems...
> > I am using karaf 4.1.2
> >
> > Any suggestion or hints to investigate are welcome !
> >
> > Thanks
> >
> > Patrick
>
> --
> Jean-Baptiste Onofré
> jbonofre@apache.org
> http://blog.nanthrax.net
> Talend - http://www.talend.com
>
Re: Slow shutdown of karaf
Posted by Jean-Baptiste Onofré <jb...@nanthrax.net>.
Hi Patrick,
which OSGi framework are you using ? Equinox or Felix ?
Regards
JB
On 13/06/2019 17:20, Patrick Magon wrote:
> Hello,
> I have a problem stopping karaf in a production environment: after using
> the system for days, the stop takes minutes (> 30 min).
>
> I am able to reproduce this behavior by continually running the
> integration tests during 1 hour...
>
> I tried to monitor karaf and everything seems ok (CPU, memory, no
> garbage collection....).
> I also tried to monitor all involved sub-systems (kafka, solr...) but
> everything looks ok.
>
> There is no error during the shutdown but all steps execution are slower...
> By using a profiler, I found the following:
> - Many "ClassNotFoundException" are thrown (but not logged) during the
> shutdown (millions of "ClassNotFoundException)
> Most of them comes from "org.apache.felix.framework.ExtentionManager"
> (method getClassByDelegation)...
>
> - I also found that lsof shows a lot of files (bundles jars) (that are
> duplicated by thread ??)
> These "open files" increase continually...
>
> I'm a little lost with these problems...
> I am using karaf 4.1.2
>
> Any suggestion or hints to investigate are welcome !
>
> Thanks
>
> Patrick
--
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com