SolrJ does indeed provide load balancing via CloudSolrClient which uses LBHttpSolrClient: https://lucene.apache.org/solr/5_5_0/solr-solrj/org/apache/solr/client/solrj/impl/CloudSolrClient.html https://lucene.apache.org/solr/5_5_0/solr-solrj/org/apache/solr/client/solrj/impl/LBHttpSolrClient.html
There is the separate issue of how many application clients you may have and whether a load balancer would be in front of them. -- Jack Krupansky On Mon, Apr 18, 2016 at 4:34 AM, Jaroslaw Rozanski <s...@jarekrozanski.com> wrote: > Hi, > > How are you executing searches? > > I am asking because if you search using Solr client, for example SolrJ - > ie. create instance of CloudSolrClient, and not directly via HTTP > endpoint, it will provided load-balancing (last time I checked it picks > random non-stale node). > > > Thanks, > Jarek > > On Mon, 18 Apr 2016, at 05:58, John Bickerstaff wrote: > > Thanks, so on the matter of indexing -- while I could isolate a cloud > > replica from queries by not including it in the load balancer's list... > > > > ... I cannot isolate any of the replicas from an indexing perspective by > > a > > similar strategy because the SOLR leader decides who does indexing? Or > > do > > all "nodes" index the same incoming document independently? > > > > Now that I know I still need a load balancer, I guess I'm trying to find > > a > > way to keep indexing load off servers that are busy serving search > > results... Possibly by having one or two servers just handle indexing... > > > > Perhaps I'm looking in the wrong direction though -- and should just spin > > up more replicas to handle more indexing load? > > On Apr 17, 2016 10:46 PM, "Walter Underwood" <wun...@wunderwood.org> > > wrote: > > > > No, Zookeeper is used for managing the locations of replicas and the > > leader > > for indexing. Queries should still be distributed with a load balancer. > > > > Queries do NOT go through Zookeeper. > > > > wunder > > Walter Underwood > > wun...@wunderwood.org > > http://observer.wunderwood.org/ (my blog) > > > > > > > On Apr 17, 2016, at 9:35 PM, John Bickerstaff < > j...@johnbickerstaff.com> > > wrote: > > > > > > My prior use of SOLR in production was pre SOLR cloud. We put a > > > round-robin load balancer in front of replicas for searching. > > > > > > Do I understand correctly that a load balancer is unnecessary with SOLR > > > Cloud? I. E. -- SOLR and Zookeeper will balance the load, regardless > of > > > which replica's URL is getting hit? > > > > > > Are there any caveats? > > > > > > Thanks, >
