Hi Jason and Shawn, As you mentioned, I've mixed up the concept of a collection and core. Thank you for clearing up.
Thank you, Arunan On 20 July 2018 at 20:31, Shawn Heisey <apa...@elyograg.org> wrote: > On 7/20/2018 12:09 AM, Arunan Sugunakumar wrote: > > I would like to know whether it is possible to create a collection in > Solr > > through SolrJ. I tried to create and it throws me an error saying that > > "Solr instance is not running in SolrCloud mode. > > A "collection" is a SolrCloud concept. Collections are comprised of one > or more shards. Shards are comprised of one or more replicas. Each > shard replica is a Solr index core. The Collections API, which is most > likely what you are calling in SolrJ when you get that error, only works > in SolrCloud mode. > > Standalone mode only has cores. They are not called collections. > > You can use the CoreAdmin API in standalone mode, but be aware of the > large warning box here titled "CREATE must be able to find a > configuration": > > https://lucene.apache.org/solr/guide/7_4/coreadmin-api.html > > Typically, filesystem access is required to create the configuration > when running in standalone mode, before the core can be created. If you > want to be able to create indexes completely remotely, that is a whole > lot easier if Solr is running in SolrCloud mode. > > Something that the documentation for the CoreAdmin API doesn't say, but > probably should, is that in most usage, instanceDir and dataDir should > not be specified. The instanceDir will default to the same name as the > core, and it will live in the solr home. The dataDir defaults to > "./data" relative to the instanceDir, and this is usually the best > option. Changing these is an expert option. > > Thanks, > Shawn > >
