Hello list, i want to experiment with the new SolrCloud feature. So far, I got absolutely no experience in distributed search with Solr. However, there are some things that remain unclear to me:
1 ) What is the usecase of a collection? As far as I understood: A collection is the same as a core but in a distributed sense. It contains a set of cores on one or multiple machines. It makes sense that all the cores in a collection got the same schema and solrconfig - right? Can someone tell me if I understood the concept of a collection correctly? 2 ) The wiki says this will cause an update -Durl=http://localhost:8983/solr/collection1/update However, as far as I know this cause an update to a CORE named "collection1" at localhost:8983, not to the full collection. Am I correct here? So *I* have to care about consistency between the different replicas inside my cloud? 3 ) If I got replicas of the same shard inside a collection, how does SolrCloud determine that two documents in a result set are equal? Is it neccessary to define a unique key? Is it random which of the two documents is picked into the final resultset? --- I think these are my most basic questions. However, there is one more tricky thing: If I understood the collection-idea correctly: What happens if I create two cores and each core belongs to a different collection and THEN I do a SWAP. Say: core1->collection1, core2->collection2 SWAP core1,core2 Does core2 now maps to collection1? Thank you! -- View this message in context: http://lucene.472066.n3.nabble.com/SolrCloud-Questions-for-MultiCore-Setup-tp2309443p2309443.html Sent from the Solr - User mailing list archive at Nabble.com.
