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Posted to solr-user@lucene.apache.org by Markus Jelsma <ma...@openindex.io> on 2017/04/04 13:46:32 UTC
Solr 6.x leaking one SolrZkClient instance per second?
Hi,
One of our nodes became berzerk after a restart, Solr went completely nuts! So i opened VisualVM to keep an eye on it and spotted a different problem that occurs in all our Solr 6.4.2 and 6.5.0 nodes.
It appears Solr is leaking one SolrZkClient instance per second via DistributedQueue$ChildWatcher. That one per second is quite accurate for all nodes, there are about the same amount of instances as there are seconds since Solr started. I know VisualVM's instance count includes objects-to-be-collected, the instance count does not drop after a forced garbed collection round.
It doesn't matter how many cores or collections the nodes carry or how heavy traffic is.
Is this a known issue? Ticket?
Thanks,
Markus
Re: Solr 6.x leaking one SolrZkClient instance per second?
Posted by Shalin Shekhar Mangar <sh...@gmail.com>.
Please open a Jira issue. Thanks!
On Tue, Apr 4, 2017 at 7:16 PM, Markus Jelsma
<ma...@openindex.io> wrote:
> Hi,
>
> One of our nodes became berzerk after a restart, Solr went completely nuts! So i opened VisualVM to keep an eye on it and spotted a different problem that occurs in all our Solr 6.4.2 and 6.5.0 nodes.
>
> It appears Solr is leaking one SolrZkClient instance per second via DistributedQueue$ChildWatcher. That one per second is quite accurate for all nodes, there are about the same amount of instances as there are seconds since Solr started. I know VisualVM's instance count includes objects-to-be-collected, the instance count does not drop after a forced garbed collection round.
>
> It doesn't matter how many cores or collections the nodes carry or how heavy traffic is.
>
> Is this a known issue? Ticket?
>
> Thanks,
> Markus
--
Regards,
Shalin Shekhar Mangar.
RE: Solr 6.x leaking one SolrZkClient instance per second?
Posted by Markus Jelsma <ma...@openindex.io>.
Opened: https://issues.apache.org/jira/browse/SOLR-10420
Thanks,
Markus
-----Original message-----
> From:Shalin Shekhar Mangar <sh...@gmail.com>
> Sent: Tuesday 4th April 2017 16:11
> To: solr-user@lucene.apache.org
> Subject: Re: Solr 6.x leaking one SolrZkClient instance per second?
>
> Please open a Jira issue. Thanks!
>
> On Tue, Apr 4, 2017 at 7:16 PM, Markus Jelsma
> <ma...@openindex.io> wrote:
> > Hi,
> >
> > One of our nodes became berzerk after a restart, Solr went completely nuts! So i opened VisualVM to keep an eye on it and spotted a different problem that occurs in all our Solr 6.4.2 and 6.5.0 nodes.
> >
> > It appears Solr is leaking one SolrZkClient instance per second via DistributedQueue$ChildWatcher. That one per second is quite accurate for all nodes, there are about the same amount of instances as there are seconds since Solr started. I know VisualVM's instance count includes objects-to-be-collected, the instance count does not drop after a forced garbed collection round.
> >
> > It doesn't matter how many cores or collections the nodes carry or how heavy traffic is.
> >
> > Is this a known issue? Ticket?
> >
> > Thanks,
> > Markus
>
>
>
> --
> Regards,
> Shalin Shekhar Mangar.
>