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From Jens Rantil <jens.ran...@tink.se>
Subject Re: Spinning CPU on version 3.4.5
Date Mon, 29 Feb 2016 15:56:20 GMT
Flavio,

Thanks for your input. It looks like we were hitting the memory limit with
too many znodes. Vi cleaned up our znodes and Zookeeper is performing a
thousand fold better.

Cheers,
Jens

On Wed, Feb 24, 2016 at 1:54 PM, Flavio Junqueira <fpj@apache.org> wrote:

> Hi Jens,
>
> Could it be this issue:
>
> https://issues.apache.org/jira/browse/ZOOKEEPER-1657 <
> https://issues.apache.org/jira/browse/ZOOKEEPER-1657>
>
> -Flavio
>
> > On 24 Feb 2016, at 12:48, Jens Rantil <jens.rantil@tink.se> wrote:
> >
> > Hi,
> >
> > We've had one of our Zookeeper nodes starting to spin CPU-wise a couple
> of
> > times this week. The instance isn't logging anything at all and I can't
> do
> > any `ruok` or `stat` out of it (that is, its is very unresponsive). I
> can't
> > find any issues with the disk and the Zookeeper process is using equally
> > much as the other Zookeeper instances.
> >
> > Unfortunately, we are running Zookeeper with OpenJDK at the moment so I
> was
> > unable to execute `jstack` (it's not bundled). If this issues remains we
> > might migrate to use Oracle's JDK instead.
> >
> > Question: Does anyone of any known issues like this with 3.4.5?
> >
> > /J
> >
> > --
> > Jens Rantil
> > Backend engineer
> > Tink AB
> >
> > Email: jens.rantil@tink.se
> > Phone: +46 708 84 18 32
> > Web: www.tink.se
> >
> > Facebook <https://www.facebook.com/#!/tink.se> Linkedin
> > <
> http://www.linkedin.com/company/2735919?trk=vsrp_companies_res_photo&trkInfo=VSRPsearchId%3A1057023381369207406670%2CVSRPtargetId%3A2735919%2CVSRPcmpt%3Aprimary
> >
> > Twitter <https://twitter.com/tink>
>
>


-- 
Jens Rantil
Backend engineer
Tink AB

Email: jens.rantil@tink.se
Phone: +46 708 84 18 32
Web: www.tink.se

Facebook <https://www.facebook.com/#!/tink.se> Linkedin
<http://www.linkedin.com/company/2735919?trk=vsrp_companies_res_photo&trkInfo=VSRPsearchId%3A1057023381369207406670%2CVSRPtargetId%3A2735919%2CVSRPcmpt%3Aprimary>
 Twitter <https://twitter.com/tink>

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