Here writes something: https://support.lucidworks.com/entries/22180608-Solr-HA-DR-overview-3-x-and-4-0-SolrCloud-and says:
Both leaders and replicas index items and perform searches. How replicas index items? 2013/4/15 Furkan KAMACI <furkankam...@gmail.com> > Does leaders may response search requests (I mean do they store indexes) > at when I run SolrCloud at first and after a time later? > > > 2013/4/15 Jack Krupansky <j...@basetechnology.com> > >> When the cluster is fully operational, yes. But if part of the cluster is >> down or split and unable to communicate, or leader election is in progress, >> the actual count of leaders will not be indicative of the number of shards. >> >> Leaders and shards are apples and oranges. If you take down a cluster, by >> definition it would have no leaders (because leaders are running code), but >> shards are the files in the index on disk that continue to exist even if >> the code is not running. So, in the extreme, the number of leaders can be >> zero while the number of shards is non-zero on disk. >> >> -- Jack Krupansky >> >> -----Original Message----- From: Furkan KAMACI >> Sent: Monday, April 15, 2013 8:21 AM >> To: solr-user@lucene.apache.org >> Subject: SolrCloud Leaders >> >> >> Does number of leaders at a SolrCloud is equal to number of shards? >> > >
