Some Solr terms: Lucene Index: actual Lucene index on the disk Solr core: Solr wrapper for a Lucene Index- core is generally used when talking about configuring it Solr shard: A Lucene index with a Solr wrapper, that is part of a distributed Solr index. 'shard' specifically means a part of the whole searchable index.
Schema: a specification for the data inside a Solr index/core/shard. The schema should be the same among all shards in a distributed index. Solr searches other shards with the Distributed Search feature. This search is done by a 'broker' or 'distributor' Solr core. None of the technical docs ever give a name to the broker, so the idea often doesn't appear when talking about designing a distributed solr and so it easy to get confused. Thus, people use one of the existing shard cores to also do the broker job, causing all kinds of confusion. I prefer to configure a separate core with no actual data. It only does the broker job. Suppose there are 3 shards 'h1', 'h2', and 'h3'. I make a separate core called 'h' and set up the list of cores as invariant parameters in a <requestHandler> spec. Makes things much more clear. I think that Hitendra used 'schema' in the MySql usage of 1 set of tables in an MySQL database. On Thu, Aug 19, 2010 at 6:39 AM, Markus Jelsma <markus.jel...@buyways.nl> wrote: > http://osdir.com/ml/solr-user.lucene.apache.org/2009-09/msg00630.html > > http://osdir.com/ml/solr-user.lucene.apache.org/2009-03/msg00309.html > > > > Load balancing is bit out of scope here but all you need is a simple HTTP > load balancer and a replication mechanism, depending on your set up. > > -----Original message----- > From: Hitendra Molleti <hitendra.moll...@itp.com> > Sent: Thu 19-08-2010 14:38 > To: solr-user@lucene.apache.org; > CC: 'Jonathan DeMello' <jonathan.deme...@itp.com>; amer.mahf...@itp.com; > 'Nishchint Yogishwar' <nishchint.yogish...@itp.com>; > Subject: RE: Solr for multiple websites > > Thanks Girjesh. > > Can you please let me know what are the pros and cons of this apporoach. > > Also, how can we setup load balancing between multiple solrs > > Thanks > > Hitendra > > -----Original Message----- > From: Grijesh.singh [mailto:pintu.grij...@gmail.com] > Sent: Thursday, August 19, 2010 10:25 AM > To: solr-user@lucene.apache.org > Subject: Re: Solr for multiple websites > > > Using multicore is the right approach > -- > View this message in context: > http://lucene.472066.n3.nabble.com/Solr-for-multiple-websites-tp1173220p1219 > 772.html > Sent from the Solr - User mailing list archive at Nabble.com. > > > -- Lance Norskog goks...@gmail.com
