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From Yago Riveiro <yago.rive...@gmail.com>
Subject Re: Storing Solr Index on NFS
Date Tue, 16 Apr 2013 11:22:48 GMT
Furkan, see this post.

http://grokbase.com/t/lucene/solr-user/117t1eswyk/multiple-solr-servers-and-a-shared-index-again


Cumprimentos

-- 
Yago Riveiro
Sent with Sparrow (http://www.sparrowmailapp.com/?sig)


On Tuesday, April 16, 2013 at 12:15 PM, Furkan KAMACI wrote:

> Hi Walter;
> 
> You said: "It is not safe to share Solr index files between two Solr
> servers". Why do you think like that?
> 
> 
> 2013/4/16 Tim Vaillancourt <tim@elementspace.com (mailto:tim@elementspace.com)>
> 
> > If centralization of storage is your goal by choosing NFS, iSCSI works
> > reasonably well with SOLR indexes, although good local-storage will always
> > be the overall winner.
> > 
> > I noticed a near 5% degredation in overall search performance (casual
> > testing, nothing scientific) when moving a 40-50GB indexes to iSCSI (10GBe
> > network) from a 4x7200rpm RAID 10 local SATA disk setup.
> > 
> > Tim
> > 
> > 
> > On 15/04/13 09:59 AM, Walter Underwood wrote:
> > 
> > > Solr 4.2 does have field compression which makes smaller indexes. That
> > > will reduce the amount of network traffic. That probably does not help
> > > much, because I think the latency of NFS is what causes problems.
> > > 
> > > wunder
> > > 
> > > On Apr 15, 2013, at 9:52 AM, Ali, Saqib wrote:
> > > 
> > > Hello Walter,
> > > > 
> > > > Thanks for the response. That has been my experience in the past as well.
> > > > But I was wondering if there new are things in Solr 4 and NFS 4.1 that
> > > > make
> > > > the storing of indexes on a NFS mount feasible.
> > > > 
> > > > Thanks,
> > > > Saqib
> > > > 
> > > > 
> > > > On Mon, Apr 15, 2013 at 9:47 AM, Walter Underwood<wunder@wunderwood.**
> > > > org <wunder@wunderwood.org (mailto:wunder@wunderwood.org)>>wrote:
> > > > 
> > > > On Apr 15, 2013, at 9:40 AM, Ali, Saqib wrote:
> > > > > 
> > > > > Greetings,
> > > > > > 
> > > > > > Are there any issues with storing Solr Indexes on a NFS share?
Also any
> > > > > > recommendations for using NFS for Solr indexes?
> > > > > > 
> > > > > 
> > > > > I recommend that you do not put Solr indexes on NFS.
> > > > > 
> > > > > It can be very slow, I measured indexing as 100X slower on NFS a
few
> > > > > years
> > > > > ago.
> > > > > 
> > > > > It is not safe to share Solr index files between two Solr servers,
so
> > > > > there is no benefit to NFS.
> > > > > 
> > > > > wunder
> > > > > --
> > > > > Walter Underwood
> > > > > wunder@wunderwood.org (mailto:wunder@wunderwood.org)
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > --
> > > Walter Underwood
> > > wunder@wunderwood.org (mailto:wunder@wunderwood.org)
> > > 
> > 
> > 
> 
> 
> 



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