Also from there http://wiki.apache.org/solr/SolrCloud:
*Q:* What is the difference between a Collection and a SolrCore<http://wiki.apache.org/solr/SolrCore>? *A:* In classic single node Solr, a SolrCore<http://wiki.apache.org/solr/SolrCore>is basically equivalent to a Collection. It presents one logical index. In SolrCloud, the SolrCore <http://wiki.apache.org/solr/SolrCore>'s on multiple nodes form a Collection. This is still just one logical index, but multiple SolrCores <http://wiki.apache.org/solr/SolrCores> host different 'shards' of the full collection. So a SolrCore<http://wiki.apache.org/solr/SolrCore>encapsulates a single physical index on an instance. A Collection is a combination of all of the SolrCores <http://wiki.apache.org/solr/SolrCores>that together provide a logical index that is distributed across many nodes. 2013/3/26 J Mohamed Zahoor <zah...@indix.com> > Thanks. > > This make it clear than the wiki. > > How do you create multiple collection which can have different schema? > > ./zahoor > > On 26-Mar-2013, at 3:52 PM, Furkan KAMACI <furkankam...@gmail.com> wrote: > > > Did you check that document: > > > http://wiki.apache.org/solr/SolrCloud#A_little_about_SolrCores_and_CollectionsIt > > says: > > On a single instance, Solr has something called a > > SolrCore<http://wiki.apache.org/solr/SolrCore>that is essentially a > > single index. If you want multiple indexes, you > > create multiple SolrCores <http://wiki.apache.org/solr/SolrCores>. With > > SolrCloud, a single index can span multiple Solr instances. This means > that > > a single index can be made up of multiple > > SolrCore<http://wiki.apache.org/solr/SolrCore>'s > > on different machines. We call all of these > > SolrCores<http://wiki.apache.org/solr/SolrCores>that make up one > > logical index a collection. A collection is a essentially > > a single index that spans many > > SolrCore<http://wiki.apache.org/solr/SolrCore>'s, > > both for index scaling as well as redundancy. If you wanted to move your > 2 > > SolrCore <http://wiki.apache.org/solr/SolrCore> Solr setup to SolrCloud, > > you would have 2 collections, each made up of multiple individual > > SolrCores<http://wiki.apache.org/solr/SolrCores>. > > > > > > 2013/3/26 J Mohamed Zahoor <zah...@indix.com> > > > >> Hi > >> > >> I am kind of confuzed between multi core and multi collection. > >> Docs dont seem to clarify this.. can someone enlighten me what is ther > >> difference between a core and a collection? > >> Are they same? > >> > >> ./zahoor > >
