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From "Jürgen Wagner (DVT)" <juergen.wag...@devoteam.com>
Subject Re: Frequent recovery of nodes in SolrCloud
Date Thu, 16 Oct 2014 20:34:48 GMT
Hello,
  you have one shard and 11 replicas? Hmm...

- Why you have to keep two nodes on some machines?
- Physical hardware or virtual machines?
- What is the size of this index?
- Is this all on a local network or are there links with potential
outages or failures in between?
- What is the query load?
- Have you had a look at garbage collection?
- Do you use the internal Zookeeper?
- How many nodes?
- Any observers?
- What kind of load does Zookeeper show?
- How much RAM do these nodes have available?
- Do some servers get into swapping?
- ...

How about some more details in terms of sizing and topology?

Cheers,
--Jürgen

On 16.10.2014 18:41, sachinpkale wrote:
> Hi,
>
> Recently we have shifted to SolrCloud (4.10.1) from traditional Master-Slave
> configuration. We have only one collection and it has only only one shard.
> Cloud Cluster contains total 12 nodes (on 8 machines. On 4 machiens, we have
> two instances running on each) out of which one is leader. 
>
> Whenever I see the cluster status using http://<IP>:<HOST>/solr/#/~cloud,
it
> shows at least one (sometimes, it is 2-3) node status as recovering. We are
> using HAProxy load balancer and there also many times, it is showing the
> nodes are recovering. This is happening for all nodes in the cluster. 
>
> What would be the problem here? How do I check this in logs?
>
>
>
> --
> View this message in context: http://lucene.472066.n3.nabble.com/Frequent-recovery-of-nodes-in-SolrCloud-tp4164541.html
> Sent from the Solr - User mailing list archive at Nabble.com.


-- 

Mit freundlichen Grüßen/Kind regards/Cordialement vôtre/Atentamente/С
уважением
*i.A. Jürgen Wagner*
Head of Competence Center "Intelligence"
& Senior Cloud Consultant

Devoteam GmbH, Industriestr. 3, 70565 Stuttgart, Germany
Phone: +49 6151 868-8725, Fax: +49 711 13353-53, Mobile: +49 171 864 1543
E-Mail: juergen.wagner@devoteam.com
<mailto:juergen.wagner@devoteam.com>, URL: www.devoteam.de
<http://www.devoteam.de/>

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