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Manuel Lenormand commented on SOLR-5501: ---------------------------------------- clusterstate would look like {code:javascript} {"collection1":{ "shards":{ "shard1":{ "range":"00000000-ffffffff", "state":"active", "replicas":{ "core_node1":{ "state":"active", "roles":"hot_replica", "base_url":"http://127.0.0.1:8983/solr", "core":"collection1", "node_name":"127.0.0.1:8983_solr"}, "core_node2":{ "state":"active", "roles":"cold_replica", "base_url":"http://10.0.0.4:8983/solr", "core":"collection1", "node_name":"10.0.0.4:8983_solr", "leader":"true"}}}}} {code} and the API would be: solr/admin/collections?action=SETCOLDREPLICA&collection=collection1&shard=shard1&replica=core_node1 solr/admin/collections?action=SETHOTREPLICA&collection=collection1&shard=shard1&replica=core_node1 > Ability to work with cold replicas > ---------------------------------- > > Key: SOLR-5501 > URL: https://issues.apache.org/jira/browse/SOLR-5501 > Project: Solr > Issue Type: Improvement > Components: SolrCloud > Affects Versions: 4.5.1 > Reporter: Manuel Lenormand > Labels: performance > Fix For: 4.7 > > > Following this conversation from the mailing list: > http://lucene.472066.n3.nabble.com/Proposal-for-new-feature-cold-replicas-brainstorming-td4097501.html > Should give the ability to use replicas mainly as backup cores and not for > handling high qps rate. > This way you would avoid using the caching ressources (solr and OS) used when > routing a query to a replica. > With many replicas it's harder hitting the solr cache (same query may hit > another replica) and having many replicas on the same instance would cause a > useless competition on the OS memory for caching. -- This message was sent by Atlassian JIRA (v6.1.5#6160) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org