>a single core is an index with same schema , is this wat core really is ?
YES. A single core is a independent index with its own unique schema. You go with a new core for cases where your schema/analysis/search requirements are completely different from your existing core(s). >can a single core contain two separate indexes with different schema in it ? NO (for same reason as explained above). >Is a shard refers to a collection of index in a single physical machine >?can a single core be presented in different shards ? You can think of a Shard as a big index distributed across a cluster of machines. So all shards belonging to a single core share same schema/analysis/search requirements. You go with sharding when index is not scalable on a single machine, or, when your index grows really big in size. Thanx Pravesh -- View this message in context: http://lucene.472066.n3.nabble.com/difference-between-shard-and-core-in-solr-tp3178214p3178249.html Sent from the Solr - User mailing list archive at Nabble.com.
