Thanks Erick. That cleared my confusion. I have a follow up question - If I run the CREATE command with 4 nodes in createNodeSet, I thought 2 leaders and 2 followers will be created automatically. Thats not the case, however.
http://serv001:5258/solr/admin/collections?action=CREATE&name=Main&numShards=2&maxShardsPerNode=1&createNodeSet= serv001:5258_solr, serv002:5258_solr,serv003:5258_solr, serv004:5258_solr I still get the same response. I see 2 leaders being created, but I do not see other 2 nodes show up as followers in the cloud page in Solr Admin UI. It looks like collection was not created for those 2 nodes at all. Is there additional step involved to add them? On Mon, Sep 8, 2014 at 12:11 PM, Erick Erickson <erickerick...@gmail.com> wrote: > Ahhh, this is a continual source of confusion. I've started a one-man > campaign to talk about "leaders" and "followers" when relevant... > > _Every_ node is a "replica". This is because a node can be a leader or > follower, and the role can change. > > So your case is entirely normal. These nodes are probably the leaders > too, and will remain so while you add more replicas/followers. > > Best, > Erick > > On Mon, Sep 8, 2014 at 11:20 AM, Ethan <eh198...@gmail.com> wrote: > > I am trying to setup 2 shard cluster with 2 replicas with dedicated nodes > > for replicas. I have 4 node SolrCloud setup that I am trying to shard > > using collections api .. (Like > > > https://wiki.apache.org/solr/SolrCloud#Example_C:_Two_shard_cluster_with_shard_replicas_and_zookeeper_ensemble > > ) > > > > I ran this command - > > > > > http://serv001:5258/solr/admin/collections?action=CREATE&name=Main&numShards=2&maxShardsPerNode=1&createNodeSet= > > serv001:5258_solr, serv002:5258_solr > > > > Response - > > > > <response> > > <lst name="responseHeader"> > > <int name="status">0</int> > > <int name="QTime">3932</int> > > </lst> > > <lst name="success"> > > <lst> > > <lst name="responseHeader"> > > <int name="status">0</int> > > <int name="QTime">2982</int> > > </lst> > > <str name="core">Main_shard2_replica1</str> > > </lst> > > <lst> > > <lst name="responseHeader"> > > <int name="status">0</int> > > <int name="QTime">3005</int> > > </lst> > > <str name="core">Main_shard1_replica1</str> > > </lst> > > </lst> > > </response> > > > > I want to know what *_replica1 or *_replica2 means? Are they actually > > replicas and not the shards? I intended to add 2 more nodes as dedicated > > replication nodes. How to accomplish that? > > > > Would appreciate any pointers. > > > > -E >
